suddenly my screen wedt dark, like if i was far down in the void, and then my boat i was rinding broke

 

What I expected to happen was...:
i expected some rendering issues because of my speed, but not loosing a blat

What actually happened was...:
the screen went black for a second, then i were removed from my boat and it was teleported to the bottom of the ocean ca 50 blocks back. The screen went back to normal. the sceen went black as i drove over a magmablock

Steps to Reproduce:
1.  get in a boat and hold forward

2. drive over a magmablock