maxigeenut

Once in a while the contents of my inventory switches between two inventories I have acquired. For instance, I will have a stack of wood in my inventory, and suddenly it switches to a previous inventory I had (and vice versa). I have been going around switching between two inventories, and I don't know why this is happening. This isn't a bug, I think it is the effects of a mod, but can someone tell me what command I am using to prompt this action?