@bojidar_bg I did the sacrilege of running a KDE app on the Gnome desktop.
Since I am doing tests on Wayland, I need to try the Gnome desktop compositor (Mutter) to ensure things work there, as that one seems to be quite special.
I just ran dolphin, and it looks like that on a standard Debian stable.
@falktx Oh wow. Probably a packaging issue of some sort, but, hard to tell from out here o.o