Mario, ideally please open a new bug by running 'ubuntu-bug mutter'. Or if that doesn't work then go here: https://bugs.launchpad.net/ubuntu/+source/mutter/+filebug
Mario, ideally please open a new bug by running 'ubuntu-bug mutter'. Or if that doesn't work then go here: /bugs.launchpad .net/ubuntu/ +source/ mutter/ +filebug
https:/