1685840 - [X11/EGL] Disabling composing on KDE results in excessive window border

Status: RESOLVED DUPLICATE of bug 1719003

(Core :: Widget: Gtk, defect, P5)

Description

[Wyatt Childers]

Attachment: window-border-kde-no-composing.png

User Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:84.0) Gecko/20100101 Firefox/84.0

Steps to reproduce:

Open a Firefox window in KDE, then open a game that disables compositing.

Actual results:

The existing Firefox window gets an excessive window border. (See attached)

Expected results:

The existing Firefox window gets a normal looking window border.

Comment 1

[Wyatt Childers]

Worth noting new windows created after compositing has been disabled are not affected by this.

Comment 2

[BugBot [:suhaib / :marco]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 3

[Martin Stránský [:stransky] (ni? me)]

I see you use Fedora, which version? And is that X11 or Wayland session?
Thanks.

Comment 4

[Wyatt Childers]

I see you use Fedora, which version?

Fedora 33, KDE Spin

And is that X11 or Wayland session?

X11; can't disable Wayland compositing ;)

Thanks.

Thank you!

Comment 5

[Martin Stránský [:stransky] (ni? me)]

Is Firefox running when compositing is changed? When you launch Firefox after the compositing change, is it ok?

Comment 6

[Wyatt Childers]

Attachment: Firefox if compositing is already disabled

Comment 7

[Wyatt Childers]

If Firefox is running when compositing goes from enabled to disabled, the large border appears.

If Firefox is launched after composting goes from enabled to disabled, the border remains a small grey border, the black border does not appear (as in the screenshot just above).