Crash when changing water coaster boat variant types

When trying to change the water coaster boats' variant the game crashes. I think it might be the invisible variant but could be green square. Crashes immediately when I try to change the variant.

Hey, thank you for the report! I'll look into it, but it sounds like this may be an issue with OpenRCT2 itself. I vaguely recall that some water splash sprites depend on specific variants over multiple vehicles.