Nice game
1. "It seems like sometimes the can turn toward walls/objects, but sometimes they cant", - true. I would say that most of the time they cant rotate "inplace" but in the "Back And Forth" level I had to and somehow one of them did.
2. The main game mechanic that the characters can't make a step if one of them sees the other one is completely unclear during the first few levels. Sometimes they just didn't move and it seemed arbitrarily. Write this directly in the game description.
3. Replace "interact" with push to make it more clear.
Check out my game as well: https://nns2009.itch.io/love-full-house