Won't comment on bugs since I get its a jam game, there's a few but nothing notable enough to have ruined the experience.
When it works it really feels good to play, the central mechanic takes a minute to get used to but there's quirks that really make it feel different from other runner style games. I especially like holding jump as I summon the platform to feel like it's bouncing me higher. The levels are short enough that the more trial and error parts feel less unfair and gives the game more of a focus on skilled execution than reaction time which I enjoyed! The art is also really cute, I like it!!
If this were to become a full game I'd really love to see just a bit more focus put onto tightening the level design, there's definitely parts that feel awkward to perform even once you have the route down. Other than that I think this is really solid, and had fun with it!!