When a player tries to travel through an end gateway while riding a boat, one of the following bugs can happen for gateways generated in the end:
Player and boat are teleported, chunks are not loading and constant server warning "Boat (vehicle of [Player]) moved too quickly!"
Only boat is teleported, chunks unload for player and once server warning
And this happens when creating a custom end gateway:
Yellow beam appears and client renders about every second teleportation but boat and player stay at their position
How to reproduce
Kill the EnderDragon
Try to travel through the portal in a boat
Note: This works fine for Minecarts
Related issues
Comments


If this happens and you are stuck, you can escape the void by typing a /setblock command: /setblock ~ ~2 ~ minecraft:end_gateway 0 replace {ExactTeleport:1,ExitPortal:{X:0,Y:0,Z:0}}
Change the coordinates to a safe location and you should escape, as this will produce another End Gateway block immediately above you. (Try jumping if you don't immediately teleport to your set coordinates)
Please note you will need cheats enabled to be able to do this, and the horse has not been known to make it out the other side 😞

Is this still an issue in the latest snapshot 16w44a? If so please update the affected versions.
This is an automated comment on any open or reopened issue with out-of-date affected versions.

Is this still an issue in the most recent versions (currently that is 1.11) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time. If you are the owner/reporter of this ticket, you can modify the affected version(s) yourself.

Still in 1.14.3. Applies to other entities as well.
Might relate to MC-89915 (but is no duplicate as here minecarts are unaffected but boats are)