I was testing the EMC Collectors and it appears to be losing items while refining them.

All tests were done with the (M5) version and a full stack of coal as the beginning item, each collector was also "locked" to the desired output item. Additionally the collectors were started at 0 EMC and I used sticky pistons pulling a block to ensure they all started at the same time.

The results were.

64 Coal = 64 Redstone
64 Coal = 39 Gunpowder
64 Coal = 57 Alchemical Fuel
64 Coal = 51 Mobius Fuel
64 Coal = 48 Aeternalis Fuel

I also made a "power flower" and let it charge before inserting a stack of coal to see if I got similar results and I got a full stack of Aeteneralis Fuel back so the issue doesn't seem to happen if you have enough EMC gathered when starting the refining process.

Perhaps unrelated but I noticed that when filling the EMC Collector with multiple stacks it attempts to handle stacks greater than 64 items ... I originally attempted to used charcoal as the base fuel because I didn't realize it was an invalid option.

Thank you for your time.

I am using Minecraft 1.19.2 // Quilt 0.17.8 // Item Alchemy 0.4.4 // mcpitanlibarch 1.3.5 // Architectury 6.4.62

Thank you for your time and effort in porting one of my favorite mods.

After some more testing on 0.4.7 (haven't tested 0.4.9 yet) what I think is happening is that the slot where fuel is transmuted is accepting stacks but the EMC Collector is only outputting one item, perhaps a fix is to limit the transmutation slot to one item at a time since the issue generally doesn't happen if you start a single piece of coal transmuting and then add the rest of the coal.