Mod pack : atm7 version: 0.3.21 / mc 1.18.2

Having two or more barrels (in a stack) in a crafting table with any dye will dupe them once dyed

I have tested this with a Normal crafting table, Applied Energetics crafting terminal,
and a Metal crafting table from Engineers Decore
with all producing the same dupe

Thanks for reporting this just fixed it and will release a fix to SophisticatedCore shortly

Fixed in the latest release of sophisticated core on curseforge