Minecart

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
I would say that this really bugged minecarts and I hop on the minecart on a server, the world disappears

Steps to Reproduce:
-Second you put a lot of tracks directly and you go up, but must be about 30 blocks of Long Edge and the world will disappear (but what you hear)

-Third When the second step. you no longer be able to get off until you change the spectator mode.