https://bugs.freedesktop.org/show_bug.cgi?id=99418
--- Comment #28 from lei.pero@gmail.com --- (In reply to Michel Dänzer from comment #27)
Yeah, sounds like a mutter bug then. Anyway, thanks for the report and cooperation in narrowing it down.
Yeah, will report it on GNOME project, sorry again, I should have tested it more in depth before reporting, and thanks for the assistance.