Thank you for playing and for your detailed bug report, I'll make sure to fix them for the next version!
>I dislike having to go around and smashing all the crates after a level is completed. Might it make sense to have all crates auto-destroy once finishing a level? And maybe also have all items auto-move towards the player, or would that prevent players from saving items if they are low on health and want to backtrack? Then again, the crates can be used for experimentation and training (like timing a sword swing). I just imagine that it can be bothersome in the long run.
Good idea! I'll make items to auto-pull pickups and auto-destroy crates.