But that’s the closest thing to a map data error in gen 3
Then there’s the tweaking glitch in gen4 that requires fast erratic cycling movements to bug out the collision and map data allowing you to potentially enter areas you can’t normally go if done right. Something about loading zones and high speeds idk
Sometimes the more extensive rom hacks change how the Decamarks behave, somehow. Which means that the garbage data they’re made of obviously gets shuffled around when this happens.
I looked that up and I think it’s due to a glitches EXP group (the standards being slow, medium, fast and one or two others) that the game can’t figure out what to do with