make sure you are using the mod versions of these resources, not vanilla. I'll look into it anyway, but i tested standing torch, forge, industrial, and a few mod forges and charcoal was stacking correctly. same for spoiled meat, vanilla versions spoil to vanilla spoiled meat, which is then converted when you transfer inventory

update incoming to fix this

I also have a problem with coal

Wood in a forge and campfire creating single stacks of charoal

Appears it is probably because these are S+ forges and campfires. Think that is the issue.

Tried standard ones and they stack.

Perhaps i just need to re-place my S+ ones to see if they start stacking since you did the update. Don't think i did that.

Nope that didnt work.

try having the stack mod as the first mod loaded to make sure all the resource recipes (i.e. burn wood for charcoal) are remapped properly

Alright, i figured out the problem with charcoal, fix incoming tonight. I retested spoiled meat in containers, player/dino inventories, and in the meat spoiler (a mod). when was it not stacking for you?

I think the spoiled meat issue is fixed. Seems to be working fine since the last update. Only charcoal is still having issues.

Only other issue we are seeing is when we demo structures the mats don't stack by default.