After downgrading gnome-shell, gnome-shell-common and gnome-shell-extension-prefs to 43.2-2, everything works fine again.
- Bug#1031671: gnome-shell: Some applications always lose... Rainer Schwarzbach
- Bug#1031671: Downgrading to 43.2-2 solves the issu... Rainer Schwarzbach
- Bug#1031671: gnome-shell: Some applications always... Simon McVittie
- Bug#1031671: gnome-shell: Some applications al... Simon McVittie
- Bug#1031671: resolved for me by mutter packages up... Rainer Schwarzbach
- Bug#1031671: resolved for me by mutter package... Simon McVittie
- Bug#1031671: Re-updating gnome-shell packages solv... Rainer Schwarzbach
- Bug#1031671: gnome-shell: Some applications always... Alexey Morsov
- Bug#1031671: gnome-shell: Some applications al... Simon McVittie