That's... very odd.
For the camera jumping / locking, that seems to happen sometimes in unity web builds when the mouse hasn't focused the window properly, or something like that.
I've had it happen a couple of times in different games, but never managed to reproduce it twice in a row after reloading the page.
Would love to know what causes it, and if there's anything the game can do to prevent it...
In that screenshot, did you somehow glitch through a wall, or did the level just vanish?
Any details you could provide would be very welcome!