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[Platform_Windows]Windows-7: Firefox Window loses focus every time Flash plugin processes are (re-)launched
Every time Firefox (re-)launches the three Flash plugin processes in Windows-7, the Firefox
window loses focus. Focus does not wander to any other non-Firefox window - no window in
the entire user environment has focus any more. The Firefox window must be explicitly mouse-
clicked to restore its focus after the three Flash plugin processes have been (re-)launched.
The three Flash plugin processes are: one process for "plugin-container.exe", and two processes
for "FlashPlayerPlugin_11_3_300_262.exe". These three processes are initially launched the first
time Firefox displays a web page with Flash content. When the user subsequently browses other
web pages without Flash content in such a way that 180 seconds elapse without any Flash content
being displayed in any tab in any Firefox window, then the three processes are terminated. The
next time the user visits a page with Flash content, the three processes are re-launched again.
This means that a user who slowly browses a variety of web pages with and without Flash content
can repeatedly lose Firefox window focus, namely each time the three processes are re-launched.
This problem occurs using Windows-7 SP1 (32-bit), Firefox 13.0.1, and Flash 11.3.300.262. See
"Any Workarounds" as to why this problem would seem to be a Flash issue and not a Firefox issue.
Steps to Reproduce:
1. Start Firefox, and start Windows Task Manager in order to observe the Flash plugin processes.
2. Display any web page with Flash content, such as http://www.adobe.com/software/flash/about
3. The three Flash plugin processes (see above) should now be visible in Windows Task Manager.
4. Leave all web pages with Flash content (by going to www.google.com for example) so that no
Flash content is displayed in any tab in any Firefox window in the entire user environment.
5. Wait 180 seconds. The three Flash plugin processes should now disappear from Task Manager.
(Instead of waiting 180 seconds, it is sufficient to spend 180 seconds browsing web pages
which have no Flash content, which can of course happen with a real-world Firefox user. The
important thing is that 180 seconds must elapse without any Flash content being displayed in
any tab in any Firefox window, so that the three Flash plugin processes will be terminated.)
6. Return to any web page with Flash content, such as http://www.adobe.com/software/flash/about
This should cause the Firefox window to lose focus due to process re-launch, as described above.
7. Steps 3 through 6 can be repeated indefinitely, imitating an eclectic real-world Firefox user.
Windows-7: Firefox Window loses focus every time the Flash plugin processes are (re-)launched.
Firefox window should NOT lose focus every time the Flash plugin processes are (re-)launched.
Please see "Note" below (entire "Description" must be less than or equal to 4000 characters).
If bug is set as ToTrack or Closed as Defer, it means we have reproduced the problem, but unfortunately, it does not get high enough priority to address in our current release. We track follow up messages and votes info for each bug. Please help us to vote the bug if you run into the same issue, let us know the impact for your development and business. Thank you.
1, For issues related to Video/Audio/Rendering, please upload your system info file.
2, It will be always helpful if you can provide code snippet that repro the issue.
|Platform(s)||Windows 7 SP1|
|Found In Build||11.3.300.262|
|Fixed In Build|
10:33:53 AM GMT+00:00 Nov 12, 2014
losing focus while typing or Scrolling is really anoying
11:54:28 PM GMT+00:00 Aug 30, 2014
Here's my Vote. Please fix this annoying issue.
12:43:38 AM GMT+00:00 Aug 19, 2014
It's just an extremely irritating bug that makes browsing that much harder. It seems like it should be a relatively easy fix. Please also note that this issue occurs in Windows 8.1 and not just 7.
6:55:08 AM GMT+00:00 May 23, 2014
Every day our users use an embedded software in new firefox window. It opens every time in the background because of this bug. Firefox launches the three Flash plugin processes when this software opens. It's very confusing and annoying for everyday use.
In every case, a user interaction is necessary (same problem as Signifer123).
To keep a page with Flash contents open all the time (so that the three processes do not get killed automatically after 180 seconds of inactivity ) or, disable protected mode are NOT solutions for a company ! Please, Adobe, help us !
2:15:03 AM GMT+00:00 Jan 10, 2014
This bug impacts or flash live video solution by beeing a nuisance to our customers. No wonder people start to move away from flash, as even such visible and highly disruptive bugs do not get any attention from Adobe at all.
10:03:46 AM GMT+00:00 Oct 22, 2013
In several labs we have software that launches a window with flash in it for taking a test from, the window immediately is minimized upon launching, requiring the students to reopen the test from the taskbar every time they come in to take a test. It is confusing for the students the first time it occurs to them and requires us to have to explain that that happens to each student.
12:52:26 AM GMT+00:00 Sep 24, 2013
We are developing edu application. In some scenarios instructor can review the students' progress by opening variety of new popup windows which includes among other flash content too (charts, video, animations). We get frequently reported by support team and users that newly opened window is hidden right away. First I have suspected that it is FF bug and reported in their bug database only to find the problem lies elsewhere.
I think the focus is given back to the wrong window.
I can disable protected mode in my flash plugin. I am sure I cannot require this from our users and I doubt that they are enough technically skilled to fix that themselves.
Few of our developers have tried html5 edge should we prepare ourselves for waiting on easy fixes for years there too?
3:51:47 PM GMT+00:00 Sep 23, 2013
Having newly loaded web pages (newly launched Firefox windows) seemingly randomly pop behind the window from which they were originally launched is maddening, especially as this Adobe Flash Player bug has been in existence without a fix for at least a year by now.
There’s an excellent page describing the problem in more technical detail here: http://www.ghacks.net/2012/08/20/flash-bug-firefox-losing-focus-when-flash-contents-are-loaded/
There’s also a Bugzilla@Mozilla report on the same issue here:
8:42:48 AM GMT+00:00 Aug 9, 2013
This bug requires user interaction to resume browsing in the window that lost focus.
11:13:19 AM GMT+00:00 Jun 14, 2013
I have been able to reproduce this issue in windows 8 as well as windows 7. Since the window is re-focused to another browsers, customers are not staying on my page. As such, if this is not addressed, I will need to move away from using flash and will instruct my customers to do the same.
1:16:45 AM GMT+00:00 May 16, 2013
Adding a vote because it is irritating behaviour I encounter every day.
12:52:17 PM GMT+00:00 Apr 30, 2013
This drives me crazy. I think they are trying to discourage anyone from using flash.
2:47:24 PM GMT+00:00 Mar 27, 2013
Every time I open a link in a new window, if the page uses flash it disappears behind the old window. This is extremely frustrating.
Whilst my preferred solution is to avoid sites which use Flash, this is not always possible. Therefore it would be nice if you managed to do what every other windows GUI application in the world does, and handle window focus appropriately.
2:49:30 PM GMT+00:00 Jan 28, 2013
I was using 220.127.116.11 (AFAIK the last one that actually worked without this incredibly stupid bug) until a few weeks ago, when it bacame public that in every Flash version but the current one would be critical Zero Day risks.
So for a few weeks now, I am completely without flash. Many things are better (for example HTML5 and webm instead of that flash-crap) now. The only impairment is some videos on youtube which stopped working.
For that, I blame Google. They should stop using flash altogether and ASAP, as everyone should.
The only thing worse than Flash, is Java. xD
3:32:29 PM GMT+00:00 Jan 27, 2013
This bug is so distracting that I have disabled the Flash plugin within Firefox and shall not enable it again until it has been fixed.
3:04:47 AM GMT+00:00 Jan 23, 2013
I always have firefox in background with 10 or more tabs, now i can`t watch movie or play fullscreen game because every 3-5 minutes it lost focus and go out of fullscreen mode (movieplayer) and game window minimized in this situation.
1:55:32 PM GMT+00:00 Jan 2, 2013
I've experienced this bug numerous times with Flash and Firefox. It most often occurs when I open a link in a new window. If the new window contains flash sometimes focus shifts back to the original window. It's very frustrating and difficult to browse web pages like this. This problem has been around for months, but I thought for sure it would have been fixed by now. I'm astonished that it isn't as it is significantly impacting my work.
3:51:43 AM GMT+00:00 Dec 17, 2012
Once I clikc on flash, shortcut keys and mousescrolls don't work until I click somewhere else on the webpage.
I don't see the point of Flash needing any focus. Just let it not!
10:47:15 AM GMT+00:00 Dec 15, 2012
Firefox should not loose windows focus when the flash player is activated.
3:58:41 AM GMT+00:00 Dec 4, 2012
Every time I pause a YouTube video or change the resolution, page scrolling is disabled. Disabling Protected Mode only simplifies the workaround to having to click on the page to reenable it, which is still annoying, and defeats the purpose of Protected Mode. This has been going on for six months and is not reproducing with IE9 or Chrome 23.
It hurts my productivity by wasting my time with extra clicks, checking for updates or any other workarounds. This fix is taking entirely too long and productivity is not just limited to the work environment -personal use loss of productivity is just as important.
11:28:36 PM GMT+00:00 Nov 5, 2012
It's incredibly distracting and hurts productivity.
8:42:49 AM GMT+00:00 Nov 4, 2012
The way windows react is crucial to a efficient and predictive working flow. Switching back to a window you're working in every time the flash plugin stats is very, very annoying. It really hurts my working routine and it also hurts Firefox, as most people wont recognise this is a Flash problem.
12:51:35 PM GMT+00:00 Oct 18, 2012
This bug still exists. FIX IT! I don't give a rats ass what it costs. It's annoying as hell!
8:28:55 AM GMT+00:00 Oct 3, 2012
The Firefox screen(s) minimize(s) suddenly in the midst of work. I can then do nothing for between 30 and 60 seconds. This is a waste of time and extremely irritating. I will try to find an alternative to Flash if you are not bothering to fix this bug.
10:36:14 AM GMT+00:00 Sep 27, 2012
This is still occuring on one of our Flex apps - works fine in older versions of Flash and on IE with older version of Flash
Currently using 11.4.402.265
5:08:18 PM GMT+00:00 Sep 6, 2012
I use YouTube as a regular user and this bug is throwing a huge wrench in my browsing. :(
12:21:59 AM GMT+00:00 Sep 6, 2012
This problem affects a lot navigation on page that i am working with. When I go back i can't click on my flash application.
Windows 7 Home Basic x86
Flash Player 11.4
12:29:59 PM GMT+00:00 Aug 30, 2012
Adobe, the issue is not "fixed". Firefox is still losing focus as of your last update.
This is supremely annoying and is not a minor issue, certainly not when it negatively impacts browsing every minute or so.
11:17:07 AM GMT+00:00 Aug 21, 2012
Better but still not fixed in 11.4. The split-second loss of focus interrupts typing, and now a background Firefox window sometimes STEALS focus due to Flash.
5:54:55 AM GMT+00:00 Aug 17, 2012
This is annoying. This is very annoying.
11:15:26 PM GMT+00:00 Aug 14, 2012
It is a pain to wait a few seconds and have the firefox window which was just opened lose focus. The only good work around is to disable the flash player add on in firefox. Adobe needs to fix this bug!!!
5:44:09 PM GMT+00:00 Aug 14, 2012
The bug remains unfixed in 11.3.300.271 released on 8/14/2012.
2:06:41 PM GMT+00:00 Aug 11, 2012
This is totally annoying and has bothered me for quite some time. I'm glad that I now at least know where the problem comes from. It is telling, though, that Adobe doesn't seem to be very interested in fixing this.
11:29:16 AM GMT+00:00 Aug 8, 2012
It's obvious how this affects productivity! Fix it already.
4:54:09 AM GMT+00:00 Aug 4, 2012
Firefox v14.01, Windows 7 Ultimate, Firefox losing focus still on my PC.
This really needs to be resolved adobe.
12:57:48 PM GMT+00:00 Aug 1, 2012
+1 for me, this is a terrible flaw that I'm sure will wear out my ALT+TAB keys any day now :_)
2:31:58 PM GMT+00:00 Jul 31, 2012
Extremely annoying when using Firefox exclusively with the keyboard using a plugin such as Pentadactyl or Vimperator.
6:53:39 AM GMT+00:00 Jul 28, 2012
Because the Firefox window often loses focus, I must frequently Alt + Tab back to or click back into the window to regain focus. Otherwise, I can't scroll with the mouse wheel, keyboard arrow keys, can't use Page Up, Page Down keys, Tab through elements in the page, etc., etc., etc. Sometimes this happens in the middle of typing in a text field on a web page, so that gets interrupted. All VERY annoying.
6:19:29 AM GMT+00:00 Jul 28, 2012
Happens to me too.....................
4:54:33 PM GMT+00:00 Jul 27, 2012
Have same focus loss issue.
7:22:28 AM GMT+00:00 Jul 26, 2012
Also experiencing this issue. While a mouse click or alt-tab works to restore window focus, it's quite disruptive to browser workflow. It has changed a basic and fundamental operation behavior. In my opinion, nothing (especially within a browser) should be able to change window focus without explicit user permission.
5:49:07 AM GMT+00:00 Jul 26, 2012
Got exactly the same problem here. So annoying. Needs to be fixed!
4:20:19 AM GMT+00:00 Jul 26, 2012
It's totally obvious how this bug impacts productivity. Don't make me waste time filling this out...
10:49:06 PM GMT+00:00 Jul 23, 2012
Every time the Flash processes launch, focus is lost and I have to alt+tab out of and back into Firefox. It is even more problematic for screen reader users such as myself because when focus is lost, we can no longer read the page at all until focus is restored.
5:02:25 PM GMT+00:00 Jul 23, 2012
As per other comments, losing focus any time a flash-enabled page loads is a constant timewaster. Annoyances like these are catalysts for users to examine how much they actually need a platform, so I suggest Adobe get on top of it as quickly as possible!
11:20:53 AM GMT+00:00 Jul 22, 2012
It is annoying to have to keep clicking on a screen in order to keep typing an email or scrolling information. It is also very detrimental to minimizing use of the mouse for those with repetitive stress tendencies. I do a lot of emailing for work and when I am signed on through Remote Desktop I can barely type a sentence without having to re-click over and over again. It's nearly enough to make me go back to using the postal service!
9:49:04 AM GMT+00:00 Jul 22, 2012
Just another reason for me to hate flash. It's outdated, unsafe, unstable, slow and adobe is not even professinal enough to either avoid such a grave bug or to fix it in time.
5:41:21 AM GMT+00:00 Jul 21, 2012
Firefox is losing focus regularly during normal use. Can reproduce the issue per Bob-Hill's instructions, and have also been experiencing a defocus while using applications other than Firefox on occasion (when Firefox is running in the background), though I haven't been able to reproduce this.
Firefox version: 13.01 and 14.01
Plugin version: Shockwave Flash 11.3.300.262
OS: Windows 7 64-bit
3:52:06 PM GMT+00:00 Jul 20, 2012
This is the most annoying bug that hit me in Firefox for a very very long time.
To only mention two cases were repeatedly loosing focus easily leads to uncontrollable rage:
1. Just browse a page with flash content and start scrolling (e.g. the most basic functionality every web browser should offer). Since Flash content is loading damn slow in most cases you won't notice anything for a few seconds but as soon as the flash content is loaded Firefox looses focus and you can't even scroll in the page!
2. Open a new background tab to let it load in background (as I do all the time... why waste my precious time with waiting for a tab to load?). Continue with your work in the foreground tab (e.g. open context menu to complete some tasks). But as soon as the background tab includes flash content Firefox will lose focus. Context menu closes and your work in the foreground tab is shamelessly interrupted.
If that's the way development of Flashplayer continues I'd say: Goodbye Flash, Hello HTML5!
I'd anticipated a fix for such a gross error within less than a week (not to mention how it was possible for such a bug to get through quality control in the first place).
3:46:46 PM GMT+00:00 Jul 20, 2012
This also affects Windows Vista Home (not just FF on Win 7).
12:27:40 PM GMT+00:00 Jul 20, 2012
Do me a favor: Fix this! Lost focus on the bug description page alone more than 10 times.
5:50:33 AM GMT+00:00 Jul 20, 2012
Same problem everyone's experiencing: irritating; slows things down; confuses other users of this machine who don't understand about the bug as well as I now do.
7:07:38 AM GMT+00:00 Jul 19, 2012
I'm adding a vote because every time I click on a link in a page Firefox 14.0.1 loses focus and I can't scroll or enter information into fields until I click on the window with my mouse.
9:16:45 PM GMT+00:00 Jul 18, 2012
Problem occurs just as the original report said. This problem does not affect any other programs, just Firefox. This problem occurs when using any and all sites that have flash plugins.
HP G62-340US Notebook Computer
Windows 7 Home Premium (with SP1 installed) 64-bit
AMD Athalon II P340 Dual-Core Processor
3 GB RAM
9:36:38 AM GMT+00:00 Jul 15, 2012
Happens exactly as described by the report.
7:29:55 AM GMT+00:00 Jul 11, 2012
This is very annoying. When opening pages with flash content, tabs content must be clicked to reinstate focus.
7:58:30 AM GMT+00:00 Jul 6, 2012
Can't load videos in Firefox. Was only able to load flashplayer properly through Opera which can utilize it properly. Firefox then worked once with flash, then failed again. This is a new W7x64 machine. Never had a problem in this regard with XP desktop, or Vista laptop.
1:38:47 AM GMT+00:00 Jul 6, 2012
When opening pages with flash content, tabs content must be clicked to reinstate focus -- extremely annoying.
6:47:25 PM GMT+00:00 Jul 5, 2012
Add one more vote for someone to please fix this thing.
I'm using Win 7 64 bit, SP1.
10:36:42 AM GMT+00:00 Jul 5, 2012
Since most of my web browsing is based on opening new tabs for each interesting link I find on one page insted of going back and forth, I'm starting to get fed up with this bug...
2:14:31 PM GMT+00:00 Jul 4, 2012
Sometimes occurs when I'm in the middle of typing something, which ratchets the level of irritation upward in a rather hyperbolic ascent path that's typically accompanied by a whompload of exceedingly profane language!
Note: Still occurs following the update to v18.104.22.1685 (Win7 Pro x64), and seems to be even more frequent (AND annoying!).
2:34:38 AM GMT+00:00 Jul 1, 2012
I also have this problem with Flash Player for Firefox and it is very annoying having to click back into the window each time you open something with Flash content.
4:46:56 PM GMT+00:00 Jun 30, 2012
I have the same issue with Firefox losing focus with the latest Flash plugin. It's so annoying that I have to constantly click into a window just to scroll.
11:49:13 PM GMT+00:00 Jun 29, 2012
It's annoying. Incredibly annoying. When you are typing input into a window, best case you suddenly start hearing "ba-doing!-ba-doing!-ba-doing!" and find that you're typing into empty space, then have to re-type the missing original content. Worst case you lose important content in the form/document/e-mail/whatever it is that you're typing. This is an unacceptable bug, pure and simple. It interferes with you being able to use your computer to access and interact with a web site. That is NOT (cheezes, it just happened again) NOT, I repeat, what would be expected from a professionally compiled computer program.
1:23:34 PM GMT+00:00 Jun 28, 2012
A very excellent Problem Description. Like many others, I too have this problem. So I vote for myself and on behalf of all others, who are unaware of this bug report, to ratchet up the priority of this bug. Thanks to Bob Hill, I simply open a tab with Flash content and leave it open. It works for me.
Microsoft Windows 7 SP1 64-bit, Firefox 13.0.1
12:30:07 PM GMT+00:00 Jun 28, 2012
Extremely annoying. Firefox always had problems with the tab selection in flash, and this just took it to a whole new level of worse. Having to reselect the browser when opening flash can lead to accidental program launching or closing since you're still pressing keyboard shortcuts and think you're in the browser. I can't list how many things are wrong with focus loss.
8:10:45 PM GMT+00:00 Jun 27, 2012
Seriously interferes with browsing by stealing focus from the browser, rendering both keyboard shortcuts and the mouse scrollwheel unusable. I regularly Firefox with Flash Player 11.3 on three different Windows 7 machines and this is an issue on all of them.
Michael D Sullivan
12:43:00 PM GMT+00:00 Jun 27, 2012
Same problem both at work and at home, Win7 64-bit, latest Flash and Firefox. I've disabled Flash for now.
7:15:14 AM GMT+00:00 Jun 27, 2012
Same issue here too, Win7 64-bit + Firefox
7:08:06 AM GMT+00:00 Jun 27, 2012
I also have the lost focus problem with Firefox 13.0.1
I'm using Windows 7 Windows--Home Premium (64 bit)
Flash 11,3,300,262. installed
Hardware acceleration--off for both Firefox and Flash Player
Windows on my system is set to display in "classic mode."
While I've never timed it, I DID notice that the two flash player files disappear from task manager after exiting a site with Flash content, and spending some time there. Then, when I switch back to another site, with Flash content, and the appropriate plugins are loaded, Firefox loses focus again.
5:47:44 AM GMT+00:00 Jun 27, 2012
I also confirmed "180 seconds rule" on Firefox 13.0.1 Windows 7 Ultimate 64bit width Flash 11,3,300,262.
5:22:12 AM GMT+00:00 Jun 27, 2012
Hello. Same thing happens here with Windows 7 Pro/SP1 64-bit, FF 13.0.1 and Flash 11.3.300.262 when Protected Mode is on. It's kind of annoying when trying to use the mouse wheel to scroll the browser and nothing happens because the browser no longer has focus. Granted, the continued crashing and audio issues that others are having are more critical.
3:47:23 AM GMT+00:00 Jun 27, 2012
Hello, the same issue on vista32 sp2