I am having this issue with the new PS CC. It happens whenever I try to add/edit a text. Pick the text tool, click onto the work and -- bang! -- the whole work screen gets blank. Depending on the project size it may get stable at a certain ammount of zoom and keep blinking (or go completely blank) at other zoom factors. If I finish text editing the screen gets back to normal. Funny is that if I type something, it will be there, so the problem seems to be with the viewport.
There is someone else out there experiencing the same problem?
PS: Currently I am going to download and install back the CS6 version as the issue reported above does not happen with it.