Oh right, sorry for not saying before:
1. When your character forces into a wall, it gets stuck, even if you move sideways. And this gets quite annoying, because you need to move the opposite direction for it to get unstuck.
2. I don't know if that's really a bug, but at the flowers area: When the player steps on the flowers, it sends you to the beginning but you still get your items from other areas.
But besides those, I didn't find others