I have a bit of a strange issue.
I have a dual monitor setup (not sure if relevant).
Sometimes when I am switching workspaces, I am left with an image of the previous workspace’s window on one of the monitors (or sometimes just a white screen). The only way to get rid of the image is to move the mouse around the screen, which seems to ‘colour it in’, i.e. it removes the previous image to replace it with the one that should be there. It does this with a large square shape (like you would get with a paintbrush in MS Paint).
I tried to take a video of the issue using Kazam, but even though I encountered the issue while recording, it did not show up in the video.
Ubuntu 14.04.4 LTS.
Any help greatly appreciated, this is very frustrating and making my machine almost unusable. I want to use MATE!