Hello. I have been playing FTB Horizons: Daybreaker and have encountered a duplication bug when Mekanism interacts with Storage Units from Router Reborn. When any of the Logistical Transport pipes, including the sorter, are used to extract items from a Storage Unit, the items are not extracted, but they are added to the destination inventory. One can even loop Logistical Transport pipes into the same Storage Unit to easily duplicate the items infinitely. I tested other transportation methods such as Extra Utilites item transfer nodes, but the glitch only happened with Mekanism pipes. I will also copy this post to the Router Reborn issue tracker, as I do not know which side is causing the bug.

Version?

EDIT:
The version was in the title, proof I haven't had my coffee yet today. This should be fixed in v8.1.5.

http://youtu.be/49HvxsHBWG4

Came to report it, but already done...here is a video for your viewing pleasure.