min, max and close buttons invisible on some apps

[x0r13]

Hey,

I recently installed arc-kde via ppa over my fresh ubuntu 22.04 kde plasma install. Everything looks very nice, except for invisible min, max and close buttons on apps like celluloid, lollypop etc. Normal system windows do have those buttons.

Is there anything I need to enable in order to get the buttons to show? The functionality is there though. I can click on the position where the button should be, and then the app will resize / close it's main window.

[Benjamin-Bach]

Same issue here, under Manjaro / KDE.
This bug seems to only affect applications with the client side decoration setting enabled (or all GTK apps?).
On my system, firefox and chromium are set to not use the system title bar. Pamac is also affected.