Thank you for trying it, despite being an unfinished product, indeed, these errors have an explanation:
1.- The sudden appearance of rooms without being in them is intended to show the player that there is something beyond, not to leave an unintuitive empty space that can make him doubt whether to pass or not, although the function can be polished in a better way.
2.- This operation is normal, since it makes sense to maintain the pose when falling, furthermore, since there is no "idle" pose or a very detailed animation when falling, it does not break the aesthetics, and in fact I personally feel that it is natural
3.- The last error is not a bug, it is a "feature" (I hope my sarcasm shows haha), I actually forgot to make the main game controller delete the player's items, although something deeper was planned ajjdhsjhda.
I really don't feel that it is worth finishing this in detail, and I feel that it is better to use this game as a basis for something much better, in any case, I greatly appreciate the fact that you have taken the time to play the game and leave a review with its obvious flaws ^^, if you have any suggestions, I will gladly take them into account for when I make a real game, and obviously the new game will be of better quality, more polished, with sound and better visuals and cinematics AJHAHA