Sorry, i obviously don't understand something (or anything) about updates.
Now it's fixed
porozhnetalv@porozhnetalv-m50sv:~$ dpkg -l | grep libmutter-6-0
ii libmutter-6-0:amd64 3.36.6-1ubuntu0.20.04.3~ppa2 amd64 window manager library from the Mutter window manager
Sorry, i obviously don't understand something (or anything) about updates.
Now it's fixed
porozhnetalv@ porozhnetalv- m50sv:~ $ dpkg -l | grep libmutter-6-0 1ubuntu0. 20.04.3~ ppa2 amd64 window manager library from the Mutter window manager
ii libmutter-6-0:amd64 3.36.6-