The entire canvas work space will turn entirely white randomly while I work. The screen is not frozen, the rulers can be seen adjusting as if I were making the canvas bigger or smaller but the entire workspace stays white. When it does this it also won't let me save my work. I've tried Uninstalling and reinstalling yet the problem still occurs. If I restart my computer it happens about once every 20 minutes if I close out and reopen without restarting my computer it happens again every 5 minutes.