There is a bug where, if you fly into the portal that takes you from the overworld to the end using elytra, and throw a pearl as you touch the portal, the game crashes. I've only tested this on Xbox series S, MC Preview, and Nintendo Switch, but it seems to be worse on the Switch. (The game freezes, then shows an error screen on Switch, or closes on Xbox.) Attempting to load the bug world after a crash causes it to crash.