While fighting The Heart of Ender if you die, respawn, then bounce off the pistons you get stuck in the air. This has happened to me twice as you can see on my twitter post: https://twitter.com/MelonPumpkinhed/status/1267143436261613570

There is also another bug where my character will randomly roll to the left. I have tried it with 2 controllers so I know it's not an issue with my controller, and I'm not using joy-con so it's definitely not a controller drift issue either.