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White border in maximized window

  • 9 cavab
  • 2 have this problem
  • 13 views
  • Last reply by FredMcD

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Whenever I maximize (not fullscreen) my Firefox a white border surrounds my windows expect on the top. It even hides my taskbar. I already reinstalled it and tried to delete the remaining files in C:\Program Files but without any success. My Windows is 1909 and Firefox 74.0. Maybe some of you experienced the same problem and know how to fix it. Thanks for you help :)

Whenever I maximize (not fullscreen) my Firefox a white border surrounds my windows expect on the top. It even hides my taskbar. I already reinstalled it and tried to delete the remaining files in C:\Program Files but without any success. My Windows is 1909 and Firefox 74.0. Maybe some of you experienced the same problem and know how to fix it. Thanks for you help :)

All Replies (9)

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Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

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Sadly this didn't fix it. Enabling the safe mode made it worse and the Window began to flicker not letting me click on anything anymore.

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McCoy said

Hi   Fred,
See this bug report :
https://bugzilla.mozilla.org/show_bug.cgi?id=1483448
There are some possible solutions ....
(I don't know if this OP uses more than one monitor, though)
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Doesn't seem like there's a fix right now.

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dreia2k said

Doesn't seem like there's a fix right now.

Hello dreia,

Same here in this (unsolved) bug report :

https://bugzilla.mozilla.org/show_bug.cgi?id=1531058

Maybe try full screen (press F11)  ?


This doesn't just happen in Firefox though - see these search results .....

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F11 also didn't help. This thread seemed to get really far: https://github.com/brave/browser-laptop/issues/6258 but I couldn't figure out a clear solution.

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That github thread is very old and applies to another browser though.


https://bugzilla.mozilla.org/show_bug.cgi?id=1483448

If you want to, you could vote to show your interest for that bug report :

https://bugzilla.mozilla.org/page.cgi?id=voting.html

If you have any additional information to add, you can post a comment, but keep it to the point and concise. If you have no additional information but have the same problem : posting "I have the exact same problem" would suffice (and maybe post a link to your thread).

See the section Commenting, especially #4


I understand that this must be annoying; maybe someone else will see this and come up with the perfect solution (fingers crossed),

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I just got this issue after installing Windows 10 version v2004 and latest nvidia driver 451.48.

Now pressing the F11 key to go into fullscreen and then pressing it again makes the white bar on my second monitor go away.

I wonder if there is a permanent solution for this.

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https://bugzilla.mozilla.org/show_bug.cgi?id=1483448
White border around window when in 4k

Do not post in bug reports unless you have something to add.
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