Comment 8 for bug 163865

What's the difference between this bug and <https://bugs.launchpad.net/ubuntu/+bug/155263>? There's a suggestion <https://bugs.launchpad.net/ubuntu/+bug/155263/comments/3> that this bug happens even when compiz is not running and #155263 occurs only with compiz, but now after reading the comments here I'm not sure.

Has anyone experienced this problem while not running a 3D-enabled window manager (like compiz or beryl)? If no, bug #155263 should be merged with this one.