Hey, heckert! Yes, the training space for the tutorial is very small. Because I wanted it to be a single room type of game, I had to make two rooms for the tutorial, It's definitely not desirable for a proper release, but was a pragmatic decision so I could focus at the aspects that will have bigger impact on the overall gameplay. That said, I have plans to improve the first steps and presentation for new players.
The protagonist is very floaty, indeed! If you try, you can actually touch the ceiling by jumping and dashing upwards!
Thanks!