Thanks for playing the game. And Thanks a lot for the feedback.
The bug of not jumping hight enough is weird. I don't think it happens for everyone. I removed the half jump thinking it would be the problem but it seems not. I will check that out, but that would be after the Jam ends.
On the other hand, the yellow brother double jump it's the first time I hear about it. It should be a bug.
Thanks for the feedback, and I will try to work on the throw strength indicator, that would be a nice idea for the game.