I got problem with mu UI since Unity 5.3 version. It started to glitch like shown on gif in the link
I guess this might be engine problem, i hoped it would be fixed in 5.3.1 but it still persists. Or maybe there is something i did wrong and there is some solution to fix that ?
I had the same issue, and i figured out that it was because i used Canvas with plane distance close to the cameras Near Clipping Plane. When i moved back the canvas a little, error stopped. Nevertheless, this wasn’t an issue in earlier versions so i guess 5.3 update changed something.