This felt pretty good to play, with nice snappy controls with the gravity. I experienced some clipping issues with the gravity letting me pass through a wall, but nothing game-breaking.
Also, I was a bit confused as to what needed to be done with the crate, so I spent some amount of time pushing it through the hole and bringing it with me to the end, only to run it through again, as a test, and just ignore it, which obviously also worked. (I now realise that you could probably have jumped on it in the inverse gravity. But since you can also just change gravity and hold right to get through the hole, it didn't seem intuitive.)