A couple screens south of the Junkyard, there's an area with some Cave Hoppers jumping around, eating shrooms, nothing unusual so far.
The thing is, once they see me, they rush for a crack in the wall and ... get stuck in front of it. They just stand there, not being able to pass through, making Cave Hopper collection a very easy task. Have they become morbidly obese from eating too many mushrooms, or is this a bug ?
Edit: spelling