This is my output:
$ 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
This is my output:
$ 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-