Paper: Riding a boat above a soul sand bubble column causes players to teleport up 2 blocks

[MarkElf]

What behaviour is expected:

Not teleporting up two blocks would be ideal.

What behaviour is observed:

Teleporting up two blocks.

Steps/models to reproduce:

1. Find an ocean or large body of water source blocks.
2. Place at least a 3x3 patch of soul sand on the bottom of said ocean/water.
3. Ride a boat over the top of bubbles.
4. Teleport up two blocks

Plugin list:

None. I guess protocollib which doesn't impact this in any way.

Paper build number:

b152 - https://github.com/PaperMC/Paper/commit/93891ad57a8317678c41bad4f755627821db0eaa

Anything else:

I guess here is an image showing someone else recreating it - https://cdn.discordapp.com/attachments/538695199744851989/605975366456311838/unknown.png. Seems to be a vanilla bug but I would hope it could be patched as I don't have much faith in Mojang pushing a 1.14.5 update to fix one thing. Would probably be a good idea to let Spigot staff know to fill them in too, I'm just not sure how to navigate there - I did send a support request for this issue.

[kickash32]

Boats in general are very buggy due to desync between client and server. They will likely require an overhaul which only Mojang is able to do.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[MarkElf]

This was an issue with minecraft itself.