@Chistiano Nunes right, I updated and installed it, but but everything like before. So I installed the "temporarily as a workaround" from above again.
sudo apt install libmutter-6-0=3.36.1-3ubuntu3 gir1.2-mutter-6=3.36.1-3ubuntu3 sudo apt-mark hold libmutter-6-0
@Chistiano Nunes
right, I updated and installed it, but but everything like before. So I installed the "temporarily as a workaround" from above again.
sudo apt install libmutter- 6-0=3.36. 1-3ubuntu3 gir1.2- mutter- 6=3.36. 1-3ubuntu3
sudo apt-mark hold libmutter-6-0