https://bugs.kde.org/show_bug.cgi?id=416244
--- Comment #4 from Tom B <t...@r.je> --- > You're on X11, right? "Fixed" in 5.18. I'm on Wayland and this only happens on Wayland. > Firefox does its own headerbar thing so I recommend to report this bug to > Firefox developers, but just to be sure, could you please attach your > .config/gtk-3.0/settings.ini to this bug report? I reported it to firefox: https://bugzilla.mozilla.org/buglist.cgi?quicksearch=wayland+firefox+window+decorations And to Lutris: https://github.com/lutris/lutris/issues/2575 who said "not our bug" .config/gtk-3.0/settings.ini [Settings] gtk-application-prefer-dark-theme=true gtk-button-images=0 gtk-cursor-theme-name=breeze_cursors gtk-fallback-icon-theme=Adwaita gtk-font-name=Noto Sans Regular 10 gtk-icon-theme-name=breeze gtk-menu-images=0 gtk-primary-button-warps-slider=0 gtk-theme-name=Breeze-Dark gtk-toolbar-style=GTK_TOOLBAR_ICONS -- You are receiving this mail because: You are watching all bug changes.