I am loving this game, but I found a weird bug on level 2-3.
If, before pushing the block you need to push, you dig down from the spot to the right of the rock that's to the right of the fuel station, move 2 spots to the right, and then dig back up, you'll be on top of a hole in front of a magnet. You won't fall down the hole, but you can dig back down unless you move. If you do move, you're stuck, because you can't fall down and now you can't dig down, either. Also, weirdly, you can walk on some of the water tiles underneath where the hole is.