Thank you very mucho for your candid criticism. The design of the mechanics has a lot of room for improvement, and we shure are aware from It, and the issues you found where indeed reproducible, but alas, we didnt fix them because at the point we cause them we where running short on time.
On the hitboxes, that is personally only on me to blame, as I did most of the playtesting, and I may have played the Game too much, and grown acustomed to the jank and how to avoid It.
Overall, we are very thankfull for your opinion, as It gives us a lot ideas of things to fix. We need to fix the jump to feel better, maybe even add coyote time, since we never got around to It, play around with hitboxes... There's a lot of things, but honest criticism always brings the best out of us.