I am currently not in Ubuntu, but in Fedora. And I am having the alike troubles with Compiz task switcher. Both Application Switcher and Static Application Switcher. Happens every time I switch. Restarting X helps. Laptop ATI video card. Occurred after upgrading Fedora to 26, earlier it was OK.
I was having such errors in the past: with some Compiz plugins related to workspace and task switching. About 2-3 years ago on a PC with NVidia card. I use both Fedora and Ubuntu — not sure which distro it was (currently I just couldn't make Compiz work in Ubuntu on that PC).
I am currently not in Ubuntu, but in Fedora. And I am having the alike troubles with Compiz task switcher. Both Application Switcher and Static Application Switcher. Happens every time I switch. Restarting X helps. Laptop ATI video card. Occurred after upgrading Fedora to 26, earlier it was OK.
I was having such errors in the past: with some Compiz plugins related to workspace and task switching. About 2-3 years ago on a PC with NVidia card. I use both Fedora and Ubuntu — not sure which distro it was (currently I just couldn't make Compiz work in Ubuntu on that PC).