I didn't encounter any huge bugs.
The camera would often clip through wall and show the insides of levels. Once my egg was close to a wall and I was facing away from it, the camera went so far inside the wall I couldn't see my egg and had to restart. That happened once.
The death/crack texture would stretch and clip through objects in a weird ways way too many times, was just a distraction though.
The last (Cistern in the sky?) level there were a couple of instances where the platforms crack/destroyed states were switching before I hit them? I believe at least once it was due to my death body touching one of these and triggering them, I assume. But it might also just be janky touch detection.