No reaction of Gnome after Manjaro Update

gnome
update
#1

Since I update my Manjaro installation last weekend, Gnome does not react in any way. Mouse can be moved but no reaction on any GUI icon/button.

Any hint, what causes Gnome to ignore user interactions at all? I installed Mate via Terminal and that worked as a workaround but I’d like to use Gnome again.

Thanks,