I have Visual Studio Professional 2012 version 11.0.61030.00 Update 4.
I updated my computer to Windows 10. Big mistake. Now some stuff doesn't even work, but aside from that, my Visual Studio munges the view of the screen:
It's really an accident waiting to happen whether I'm stepping through or inserting code, it all of a sudden discombobulates the text on the screen and stuff visually disappears. If I Minimize the window and reopen it, it is back to normal, temporarily.