kicked from an singleplayer server???

in a server you kicked from the server and the game shows the reason.

but this is the last log of the launcher using snapshot 15w43c

this kick for "floating in a vehicle" is cased for another whit the boat when is placed on slime block, bug from 15w41a, the boat has propulsed up, and the kick is cased for the alture whit this bug.