SUMMARY I am using the 5.23 beta on KDE Neon Unstable in X11. I notice that now with the Breeze window decoration if I open Firefox, for example, there are now no minimize/maximize/close buttons displayed. Upon further investigation if I look in ~/.config/gtk-3.0/assets/ all the svg files generated automatically by the kde-gtk-config / kded5 kwin_bridge are now blank. This does not happen with other non-Breeze window decorations. Operating System: KDE neon Unstable Edition KDE Plasma Version: 5.23.80 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.3 Kernel Version: 5.11.0-34-generic (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-7700HQ CPU @ 2.80GHz Memory: 31.2 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics 630
Can confirm this on opensuse tumbleweed. It only happens on x11 session on wayland is Ok.
(In reply to Tony from comment #1) > Can confirm this on opensuse tumbleweed. > It only happens on x11 session on wayland is Ok. Wayland probably works because the GTK window decorations there are hard-coded to Breeze and do not get dynamically updated by kde-gtk-config.
Since the drawing is performed using private KDecoration API (bad idea, yeah), the internal breakage is probably responsible. I have a hypothesis, that it is because of this commit: https://invent.kde.org/plasma/kwin/-/commit/08d3ceb024ff00d48ef8ffd5587c61ce1c5e06eb and
Potentially https://invent.kde.org/plasma/kwin/-/merge_requests/1448 will fix it, though that doesn't match your hypothesis
Sadly, https://invent.kde.org/plasma/kwin/-/merge_requests/1448 did not fix it.
*** Bug 442939 has been marked as a duplicate of this bug. ***
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kde-gtk-config/-/merge_requests/37
Git commit c10dff60289e8aa7b1989c49280b55711daaf14e by Ash Blake. Committed on 02/10/2021 at 17:09. Pushed by ngraham into branch 'master'. kwin_bridge: Load DecorationButton without the "button" keyword Plugin keywords have been deprecated. Breeze and Oxygen no longer use the "button" keyword when registering their button plugins, so loading them now fails and blank assets get generated. Attempt loading DecorationButton without using the keyword, and if this fails, try the deprecated keyword like in the KWin commit 6f110bca. M +12 -2 kded/kwin_bridge/dummydecorationbridge.cpp https://invent.kde.org/plasma/kde-gtk-config/commit/c10dff60289e8aa7b1989c49280b55711daaf14e
Git commit 1e8ca818ee2d1fe65072d8d6bacf82a38dc14dc4 by Nate Graham, on behalf of Ash Blake. Committed on 04/10/2021 at 16:36. Pushed by ngraham into branch 'Plasma/5.23'. kwin_bridge: Load DecorationButton without the "button" keyword Plugin keywords have been deprecated. Breeze and Oxygen no longer use the "button" keyword when registering their button plugins, so loading them now fails and blank assets get generated. Attempt loading DecorationButton without using the keyword, and if this fails, try the deprecated keyword like in the KWin commit 6f110bca. (cherry picked from commit c10dff60289e8aa7b1989c49280b55711daaf14e) M +12 -2 kded/kwin_bridge/dummydecorationbridge.cpp https://invent.kde.org/plasma/kde-gtk-config/commit/1e8ca818ee2d1fe65072d8d6bacf82a38dc14dc4