For my mod I'm adding some new ores like copper and tin, ... I'm able to add the ores and smelt them but my problem is when I want to put it into my inventory. When my inventory doesn't contain any ingots and I shift click it out of the furnace the right ingot appears (say for example copper), but if I try to shift-click tin into my inventory while the copper is in it. The tin adds to the stack of copper and transforms itself. When I use a normal click, this doesn't happen and I have the right ingot.
My ingot file:
I don't know if you need any other files, if so, just ask