$ uname -a Linux pop-os 5.4.0-7626-generic #30~1588169883~20.04~bbe668a-Ubuntu SMP Wed Apr 29 21:00:02 UTC x86_64 x86_64 x86_64 GNU/Linux
$ apt show mutter Package: mutter Version: 3.36.2-1ubuntu1~20.04.1
The bug is not reproducible under this configuration on my system, using default install + proposed repository.
$ uname -a 20.04~bbe668a- Ubuntu SMP Wed Apr 29 21:00:02 UTC x86_64 x86_64 x86_64 GNU/Linux
Linux pop-os 5.4.0-7626-generic #30~1588169883~
$ apt show mutter 1ubuntu1~ 20.04.1
Package: mutter
Version: 3.36.2-
The bug is not reproducible under this configuration on my system, using default install + proposed repository.