The bubble released into the air is also pretty good until at the end where bubbles appear out of thin air.
But overall the physics are surprisingly good. In the videos from text we a person moving covered in a bedsheet, a mirror doing vaguely mirror-like things, a monkey moving in water and creating plausible waves, shadows moving over a 3d object with the sloth in the pool and plausible fire. Those are all classic topics to tackle in computer-generated graphics, all casually handled by a model that isn't explicitly trained on physical simulation.
In a twist of irony it's the simplest of those (the mirror) that's the most obviously wrong.
