I also have this.
mutter 3.18.3-0ubuntu2, gnome 3.18.5-0ubuntu0.2, xorg
Toggling the overview with super fixes the issue until it happens again. I use multiple monitors and gnome workspaces.
I also have this.
mutter 3.18.3-0ubuntu2, gnome 3.18.5-0ubuntu0.2, xorg
Toggling the overview with super fixes the issue until it happens again. I use multiple monitors and gnome workspaces.