I was able to consistently trigger the jump bug, pretty much anywhere. As for the cause, its probably some quirk of unity, I wish you luck with fixing it.
I found two bugs that I can remember in game, one was I think in orange where you would get caught randomly on the falling tiles. The other was where you can press space really fast and you get launched really high up.
np, i spent a bit over an hour in the game I think. I'm guessing when you built it you tested if each jump was possible and stitched them together rather than complete the whole thing from start to finish?