when setting a gtk theme using gnome-tweaks I figured out that some applications remained at a dark theme, eventhough I chose a light theme. I tested this behaviour with Adwaita Theme, Orchis-compact Theme, and WhiteSur Theme.
These applications remained in dark mode: gnome-boxes, gnome-photos, totem, eog
manually I could call them with the correct theme, e.g.
$ GTK_THEME=Orchis-compact gnome-boxes
I also encountered when setting the environment variable in /etc/environments everything works fine
BUT: this can only be considered a workaround, is there a better way to ensure that all applications follow the gtk theme?
I run Fedora 34 (Workstation Edition) with gnome 40.4