Hi, just found a crazy bug.

Suppose this simple setup,

This setup should take a block from the chest, place it down, and then break it, putting the block/dust/ore into the ME system.

However, if this system resides in a chunk that is constantly loaded by ftbchunks, a bug occurs and the ore is not taken from the chest. Consequently, the single ore can keep being placed and broken - producing infinite of the block.

https://i.gyazo.com/bb0574056d82b4e055e9f876e5170357.mp4

modpack : 1.4.2
ae2 : 12.9.2
ftbchunks: 1902.3.15-build.233

Edit:
The chunk doesn't have to be force loaded, just a regular claimed chunk will cause this