It seems its just the console of it filling up and causing major lag (I cannot even see it, It should close it self but only hides) the launcher needs something to limit number of lines of history because its causing a lot of performance problems having a lot of lines.
Note some times the player will also go invisable once the boat is broken, i play a PvP map a lot that uses boats, when i shoot the boat (with the invisable player in it) the player stays invisable shooting arrows at me and i have no clue where he is lol.
It seems its just the console of it filling up and causing major lag (I cannot even see it, It should close it self but only hides) the launcher needs something to limit number of lines of history because its causing a lot of performance problems having a lot of lines.