Came across this bug when checking into something else. The game complains that I am walking into a square where I already am when I move onto the saddle of a bike loaded on a bike rack.
I also have a game crash bug in similar circumstances but I could not get it to repeat in a test world and the game save I am playing has a lot of mods loaded (also I’m using the abandoned tile set Dead People). Not sure if I should try to get that fixed or not?