Hi devs!

I'm either doing something wrong or discovered a bug.
I'm trying to insert scrap into a Matter Fabricator using Mekanism pipes, Itemducts or XNet, but none of them work. Note: I use XNet just fine for automating the Implosion Compressor, Industrial Blast Furnace and a bunch more of your (multi)blocks.

Manually inserting the scrap works fine, so the Matter Fabricator should just accept it. Doesn't matter which side I try to insert it in.

I am playing ATM3 (MC 1.12.2) with:
RebornCore-1.12.2-3.6.2.187-universal.jar
TechReborn-1.12.2-2.11.1.420-universal.jar
forge-1.12.2-14.23.1.2587-universal.jar

I've created my own tiny pack with the above versions, containing just:
CodeChickenLib-1.12.2-3.1.5.331-universal.jar
CoFHCore-1.12.2-4.3.10.5-universal.jar
CoFHWorld-1.12.2-1.1.1.12-universal.jar
RebornCore-1.12.2-3.6.2.187-universal.jar
RedstoneFlux-1.12-2.0.1.2-universal.jar
TechReborn-1.12.2-2.11.1.420-universal.jar
ThermalDynamics-1.12.2-2.3.10.4-universal.jar
ThermalFoundation-1.12.2-2.3.10.6-universal.jar

With latest versions it still occurs:
RebornCore-1.12.2-3.6.9.216-universal.jar
TechReborn-1.12.2-2.12.4.496-universal.jar

Have you used the config slots options in the MatterFabricator's gui?

You will need to click on the slots and select an input side. I do plan on adding default slot configuration values in the future to make simple machines "work out of the box"

Let me know if you still have issues.

oh my god.... facepalms