Thank you very much for your feedback! It is awesome you have discovered those bugs.
I thought about fixing the "feature" you mention (it took me some time to actually figure out how to jump out on level 3) but then I decided to leave it as the result is you just die and you can restart (or continue in level 3). I think it kind of fits with the game theme. What a luxury to have a game where you can just say "it's not a bug, it's a feature". :-)