1463656 - Firefox CSD looks different on KDE Plasma than on Gnome

Status: RESOLVED DUPLICATE of bug 1453386

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

Description

[mthw0]

Attachment: FF KDE.png

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Steps to reproduce:

Start Firefox (Nightly) on KDE Plasma with CSD enabled...


Actual results:

...and you can see that the CSD looks different than it should.


Expected results:

CSD should've looked like it does on Gnome but it doesnt. See screenshots:

Comment 1

[mthw0]

Attachment: FF gnome.png

Comment 2

[mthw0]

KDE look is also present on XFCE4

Comment 3

[kinghat]

Attachment: everything was fine on KDE Neon until today. though, fedora KDE(27,28,29) always had this issue for me. Operating System: KDE neon 5.14 KDE Plasma Version: 5.14.5 Qt Version: 5.11.2 KDE Frameworks Version: 5.54.0 Kernel Version: 4.15.0-43-generic

Operating System: KDE neon 5.14

Comment 4

[maxmustermann1884]

I think this is a kde bug/feature (and xfce4 without compositor).
kwin doesn't know how to draw gtk shadows and falls back to the solid csd theme defined in your gtk theme.

Comment 5

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1552613

Comment 6

[mthw0]

This bug is now mostly fixed in Plasma 5.18 by adding support for _GTK_FRAME_EXTENTS. The only remaining issue is corners not being rounded.

Comment 7

[mthw0]

(In reply to mthw0 from comment #6)

This bug is now mostly fixed in Plasma 5.18 by adding support for _GTK_FRAME_EXTENTS. The only remaining issue is corners not being rounded.

As of today this is fixed.