If you’re on a place that has AutoJumpEnabled set to true and go next to an object to auto jump, it will make you jump in the client. However, in the server, it will not jump, causing you to be rollbacked.
You can replicate this by going to Studio, set your Device Emulator to any mobile device, add a tall part, and try walking next to it. Auto jump will try making you jump over it, however, server authority will decline it.