Recently (within the past two weeks or so) I've noticed a strange issue when switching between my external display (Thunderbolt) and my built-in display on my 15" rMBP. The following issue seems to be specific to Photoshop CS6.
Typically, I'll have a PS document open on my external display and I'll wind up taking my to another location. If I close the PS document while on my built-in and then re-open it, I get all kinds of distortion and pixellation. Closing out PS and reopining, restarting, logging on/off; none of it seems to work. It seems like the issue is with the PSD itself, but it doesn't make any sense to me. Any ideas? Screenshot: http://i.imgur.com/iCipSc7.jpg
Do you have intel gpy as well as other graphic card? You may be viewing document on different gpu's. PS does not like multiple gpu's.
Yep; I'm running Intel Graphics HD 4000 and a GeForce 650M—the standard for the 15" rMBP.