Really nice and unique concept! Nice to see other Godot users XD!
I think I need some polishing (other than the 4 blocks around the bunny bug) : the position of the bunny flickers for like one frame when you click the play button in the menu control; a save-system of the high score would be nice; the pathfinding flickers between different possible solutions during the bunny movement if the path is not too constrained (when you hit start you already calculated the optimal path, you could store that and use it directly)
Anyways, nice job!