The only leak fix in 3.36.7 is https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1449 but that one may never be noticeable so may not be the issue you describe.
If you experience leaks then remove any extensions you have installed. If the problem keeps happening after that then open a new bug by running: ubuntu-bug gnome-shell -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1903230 Title: Mutter release 3.36.7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1903230/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs