See this support article: https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

the-edmeister said

See this support article: https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

I do not have these issues with any other browsers or programs. Is my graphics card still a suspect?

Not necessarily the card itself, but the drivers may be older and might be contributing to that problem. If you don't want to deal with it, just disable hardware acceleration as mentioned in that support article under I still have problems with my graphics card in Firefox and see if that visual glitch is gone.

Also, it appears that you have two different version of the Adobe Flash Plugin installed for Firefox, per your More System Details. Shockwave Flash 17.0 r0 Shockwave Flash 11.4 r402

Unfortunately, Adobe doesn't clean up after itself too well sometimes during a Flash update and some users end up with multiple plugins hanging around. That can confuse Firefox and cause other problems for users. Adobe is well aware of that issue and provides an uninstaller to remove all installed versions of Adobe Flash, to allow the user top get a clean slate.

First, grab the Adobe uninstaller from here: http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html

Then download the latest Flash Plugin version from here: Select Plugin-based browsers - the EXE version. https://www.adobe.com/products/flashplayer/distribution3.html

Run the Flash uninstaller program, then reboot your PC. Then install the Plugin version of Flash. So you'll have a clean installation of Flash for Firefox.

the-edmeister said

Not necessarily the card itself, but the drivers may be older and might be contributing to that problem. If you don't want to deal with it, just disable hardware acceleration as mentioned in that support article under I still have problems with my graphics card in Firefox and see if that visual glitch is gone.

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Also, it appears that you have two different version of the Adobe Flash Plugin installed for Firefox, per your More System Details. Shockwave Flash 17.0 r0 Shockwave Flash 11.4 r402

Unfortunately, Adobe doesn't clean up after itself too well sometimes during a Flash update and some users end up with multiple plugins hanging around. That can confuse Firefox and cause other problems for users. Adobe is well aware of that issue and provides an uninstaller to remove all installed versions of Adobe Flash, to allow the user top get a clean slate.

First, grab the Adobe uninstaller from here: http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html

Then download the latest Flash Plugin version from here: Select Plugin-based browsers - the EXE version. https://www.adobe.com/products/flashplayer/distribution3.html

Run the Flash uninstaller program, then reboot your PC. Then install the Plugin version of Flash. So you'll have a clean installation of Flash for Firefox.

Unfortunately, neither of these solutions worked. bold text

Other users with the favicon repeating across the tab confirmed that disabling hardware acceleration work on their systems. Did you exit Firefox and start it up again after changing the setting? If you check the preferences tab again, is it still turned off? You can confirm using the support information page:

• "3-bar" menu button > "?" button > Troubleshooting Information
• (menu bar) Help > Troubleshooting Information
• type or paste about:support in the address bar and press Enter

If you use Find in the page (Ctrl+f) to search for GPU, you should see a row labeled "GPU Accelerated Windows" where the first value is 0 -- for example, if you have 3 windows open, it usually would show 3/3 if acceleration is enabled, and 0/3 if it is disabled.