Crash on world load containing sorting machine

[Wupp]

Hi,

I've had this issue where every time I would place a sorting machine into my world and reload that world, the game would crash. I would be able to load back into the world, but my sorting machines would reset and upon quitting the world and reloading, the crash would occur again. I have my sorting machines set up in this manner: https://i.imgur.com/SCMo1Gw.png. This doesn't occur when the machines are set up so one machine into several different colours, but i would like a large variety of items in one chest at once.

I am playing on Minecraft 1.12.2 and using Teckle verion 1.12-5.394. Here is an example of a crash log due to this bug: https://gist.github.com/Wupp/5a6b49962b28e35483b135bb3218ca1f