World consistently corrupts when riding minecart to nearest town. Many attempts made to get around problem in game. Can walk to town on rails without corruption. Can travel to and from town by boat without world corruption. 

Very easy to replicate bug.

Seems to be like a seg fault like issue, memory access out of bounds. 

After corruption:

• can't pick up minecart
• villagers stop moving
• game music stops
• world does not save correctly, long write to disk time
• Minecraft crashes when attempting to save game.

Re-installed Minecraft to double check bug. 

Computer memory and disk drive checked out OK. 

Exported game file can be found here (I hope):

https://drive.google.com/file/d/18rwTSzSCHizK2sP89kSIMGxuvVOZQzWL/view?usp=sharing