If you use an RC item and travel far enough away, and quickly leave that RC and try to enter it again, you will lose connection to the server. This can be frustrating if you want to quickly move the RC item back to your player.
Bonus Lore:
This is something I first noticed during the testing for the engine migration, but I only just now learned how to replicate it. At the time I thought it had something to do with being driven around in something like the RC Golf Cart, but now I realize that it was happening because of both how far Umbre had driven me, and how quickly I tried to replace the RC Dragon.