Default [Q] Display Problem

Hello to all. I have one thing to ask you. I realized that when I replace in my terminal a ROM like CM 10.x or derived, the screen starts to behave abnormally, with a sudden flash or white lines that delivery from the lower end of the screen until the upper end.
This is normal? I do not think, to avoid damage to the phone, however, soon after verifying the occurrence of these phenomena I immediately replaced with a different ROM.
What causes do you think? No one has had the same problem?