Thanks for checking it out!
Missing platforms was an issue due to using the root motion of jumps to get from one point to the next and a late jump could mean a late landing which could lead to the other bug mentioned and with the short timeframe of the gamejam I was unable to address it in time. :(
I've been working on an updated version of this concept though where I calculate a parabola for precision jumps, aswell as making it clearer when to jump with a new "Jump'O'meter", and a new cat. (You can see a small clip of it on my Twitter: Catrobat v2 Tweet Clip)