Yeah, somebody else already said that there is a problem with the last collider.
I'm not really sure what cause this problem, but it'll be fixed in a small update after the jam ends.
As for the theme, we wanted to take a different approach than the time or tape rewind, since everybody would go with this. (not that it's a bad thing, it even made some great games, but I personally like twisting themes).
That's why we went with the robots, since rewind originally meant "wind-up again".
Though I concede that it's a bit of a stretch.
Many thanks for your comment, I love this kind of detailed feedback.