Thank you! I got a little carried away with the lawn mower placement :)
I do agree with the hitbox issue. We had a lot of trouble with collisions and getting around obstacles without breaking the game (for some reason, for a long time, if you were walking up or down, while touching any object, you would lose all your lives at once).
Level 9 is beatable! I'll go add a little note to the game description about it, but you are able to run on the house wall. It's definitely a design choice, and not a bug we turned into a feature.