Can you describe a set of steps to reproduce this problem? Or does it appear to be kind of random. Your screenshot shows an audio layer - are you experiencing this without any audio involved?
I don't know of an issue with an audio layer that might cause this, but there were some big changes to audio in this version. It's possible that your specific audio file uncovered an unknown bug. If it does appear to be isolated to this audio file, feel free to forward it to support@lostmarble.com and I can take a detailed look.