Yeah, I have just noticed the minecart chests spewing their items, I figured it was related to this, since I see a lot of duplicate UUIDs for the minecarts as well as other entities.
It's ongoing, it's possible it only happens when a chunk is first loaded with the new version, however this world was created fresh for 15w38a, so it is a moderately new world.
Jonathan Brazell
Yeah, I have just noticed the minecart chests spewing their items, I figured it was related to this, since I see a lot of duplicate UUIDs for the minecarts as well as other entities.