Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

White Bar appears above all firefox windows when Firefox is maximized, need help getting rid of it.

  • 5 replies
  • 1 has this problem
  • 5 views
  • Last reply by Shigbeard

Shigbeard
Shigbeard
more options

I have a strange white bar that appears above the Firefox window at all times, but it's only visible on one of my other monitors, which is positioned above the monitor Firefox is on. I've tried starting firefox with all my extensions and themes disabled, and all that did was make the bar black instead of white.

This lead me to believe it was the Title bar. However, that's currently disabled. When I enable the title bar, the white bar disappears, but then I'm left with the title bar (which I do not want).

Is there a way I can have the Title bar disabled and not have this bar appear?

Worth noting I'm using the Lepton UI mod (which doesn't seem to be responsible for this) and DisplayFusion (which I thought would have been responsible for this, however I cannot be sure). Running Win 10.

I have a strange white bar that appears above the Firefox window at all times, but it's only visible on one of my other monitors, which is positioned above the monitor Firefox is on. I've tried starting firefox with all my extensions and themes disabled, and all that did was make the bar black instead of white. This lead me to believe it was the Title bar. However, that's currently disabled. When I enable the title bar, the white bar disappears, but then I'm left with the title bar (which I do not want). Is there a way I can have the Title bar disabled and not have this bar appear? Worth noting I'm using the Lepton UI mod (which doesn't seem to be responsible for this) and DisplayFusion (which I thought would have been responsible for this, however I cannot be sure). Running Win 10.
Attached screenshots

All Replies (5)

-elison-
-elison-
more options

Do you have any other applications running in the background that may be causing this?

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Are you possibly using code in userChrome.css as Troubleshoot Mode disable this feature ?

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window
Shigbeard
Shigbeard Question owner
more options

cor-el said
Are you possibly using code in userChrome.css as Troubleshoot Mode disable this feature ? Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.
  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window

I tried this already, the bar continues to appear on the other monitor, only disappearing when I turn the Title bar ON. Screenshotted now for proof (because when i made the first post I forgot how to get back to troubleshoot mode). You can see my screenshot software (sharex) selects the entire window, but there's a black bar on top to the left, this is actually outside of all my monitor regions, the white part on the right is within my 3rd monitor's region and disappears when i turn the title bar on.

EDIT: I have new information to add to this. The extra space does _NOT_ appear if the firefox window is NOT maximized, and does _NOT_ appear if the firefox window is in fullscreen.

Modified by Shigbeard

Shigbeard
Shigbeard Question owner
more options

elisonasis said
Do you have any other applications running in the background that may be causing this?

The only application running in the background that interfere with the standard rendering of windows is DisplayFusion. I havent entirely ruled out DisplayFusion as being the root cause of this issue, but I did disable the feature in it that I thought was the cause (a feature that adds a button onto all window's title bars) and it hasn't had an impact. I've yet to try completely disabling the application, something i'd rather avoid having to resort to.

Shigbeard
Shigbeard Question owner
more options

This may be related to https://answers.microsoft.com/en-us/windows/forum/all/internet-browsers-bleeding-into-top-monitor/1be22140-553d-439f-b05e-55b1c3f653cd - same issue really.