1999857 - thick color line on the top of screen since Firefox 145.0

Status: RESOLVED DUPLICATE of bug 1993474

(Core :: Widget: Win32, defect)

Description

[Dmitry Stepanushkin]

Attachment: here is how it looks in Firefox 144.0.2.png

Steps to reproduce:

1. Update to Firefox 145.0
2. Open Firefox

Actual results:

a thick green (in my case) line / or like bar in the top of screen appeared

Expected results:

I expected it look like in Firefox <= 144.0.2 when dark theme, window border is also dark, which is more consistent

Comment 1

[Dmitry Stepanushkin]

Attachment: Firefox 145.0 green bar on top.png

Comment 2

[Dmitry Stepanushkin]

Oh, it's multimonitor issue. Even on Firefox 145, if I open Firefox window on main 4K monitor, it shows no green line on top, but if I open it on second Full HD(1920x1080) monitor, there is a green line on top like on screenshot.

Comment 3

[Dmitry Stepanushkin]

first monitor: Philips 278E1A/11 3840x2160 on left, displayed as monitor 2 in Windows
second monitor: AOC i2757Fh AMI2757WAH-GP3R 1920x1080 on right, displayed as monitor 1 in Windows

both connected by HDMI if that matters

Comment 4

[Dmitry Stepanushkin]

Attachment: monitor settings.png

Comment 5

[BugBot [:suhaib / :marco]]

The Bugbug bot thinks this bug should belong to the 'Firefox::Theme' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 6

[Greg Stoll :gstoll]

Thanks for the information. Does setting the pref widget.windows.windowsappsdk.enabled to false (and restarting Firefox) fix the issue?

If so, this is probably a dupe of bug 1993474

Comment 8

[Dmitry Stepanushkin]

(In reply to Greg Stoll :gstoll from comment #6)

Thanks for the information. Does setting the pref widget.windows.windowsappsdk.enabled to false (and restarting Firefox) fix the issue?

If so, this is probably a dupe of bug 1993474

Hello, Greg Stoll!
I tried to set widget.windows.windowsappsdk.enabled = false, and it fixed my issue. Will use this as workaround. Thanks!
*If I set widget.windows.windowsappsdk.enabled = true, green line on top appears again, so it seems that's it.

Comment 9

[michaelleo420]

So i originally posted my own bug report but its been merged here.

I decided to try that widget.windows.windowsappsdk.enabled to false, and it also fixes my issue, but the strange thing is when i view photos with windows photo viewer, i have that big white line at the top of my screen on my 2nd monitor still, so its not just a firefox issue

Im thinking this is actually a windows 11 issue?

Comment 10

[michaelleo420]

(In reply to Dmitry Stepanushkin from comment #8)

(In reply to Greg Stoll :gstoll from comment #6)

Thanks for the information. Does setting the pref widget.windows.windowsappsdk.enabled to false (and restarting Firefox) fix the issue?

If so, this is probably a dupe of bug 1993474

Hello, Greg Stoll!
I tried to set widget.windows.windowsappsdk.enabled = false, and it fixed my issue. Will use this as workaround. Thanks!
*If I set widget.windows.windowsappsdk.enabled = true, green line on top appears again, so it seems that's it.

Do you have the bug still when opening windows photo viewer to view a picture on the second monitor if its full screen/maximized?

Comment 11

[Dmitry Stepanushkin]

(In reply to michaelleo420 from comment #10)

(In reply to Dmitry Stepanushkin from comment #8)

(In reply to Greg Stoll :gstoll from comment #6)

Thanks for the information. Does setting the pref widget.windows.windowsappsdk.enabled to false (and restarting Firefox) fix the issue?

If so, this is probably a dupe of bug 1993474

Hello, Greg Stoll!
I tried to set widget.windows.windowsappsdk.enabled = false, and it fixed my issue. Will use this as workaround. Thanks!
*If I set widget.windows.windowsappsdk.enabled = true, green line on top appears again, so it seems that's it.

Do you have the bug still when opening windows photo viewer to view a picture on the second monitor if its full screen/maximized?

yes, same problem in Microsoft Photo app.

Comment 12

[michaelleo420]

(In reply to Dmitry Stepanushkin from comment #11)

(In reply to michaelleo420 from comment #10)

(In reply to Dmitry Stepanushkin from comment #8)

(In reply to Greg Stoll :gstoll from comment #6)

Thanks for the information. Does setting the pref widget.windows.windowsappsdk.enabled to false (and restarting Firefox) fix the issue?

If so, this is probably a dupe of bug 1993474

Hello, Greg Stoll!
I tried to set widget.windows.windowsappsdk.enabled = false, and it fixed my issue. Will use this as workaround. Thanks!
*If I set widget.windows.windowsappsdk.enabled = true, green line on top appears again, so it seems that's it.

Do you have the bug still when opening windows photo viewer to view a picture on the second monitor if its full screen/maximized?

yes, same problem in Microsoft Photo app.

Yeh same, im thinking this is a windows 11 issue but conflicting with something in firefox, especially if that microsoft photo app is doing the same thing

Comment 13

[Greg Stoll :gstoll]

I'm pretty confident this is a duplicate.