Mario Fridrichovsky

@Kevin It's fixed in 1.11, not for 1.10.2

Really annoying if you want to make a boat race on ice, you permanently crash into other players who stay on the road.

still persistent in 1.9.2

Another hopefully helpful information:
if the player within a boat will be teleported with /tp @e[type=Boat] ~ ~2 ~2 or similar commands, all other players on the same server will see the player teleported to the given location, but the player in the boat doesn't receive any update and is still driving towards the wall.
I also tried it plugin-side to give the player, boat or both a velocity, similar effect like with vanilla tp.

The problem still exists in 1.9 release, tested it on server and single player.
Teleporting a player - works
Teleporting a boat - works
Teleporting a boat with player - doesn't work