Seeds looted from Njerp villages have "Taken" tag

[Bert Preast]

I have been gleefully genociding the Njerps and have noticed that when I loot their stuff, bags and baskets of seeds often have the "Taken" tag that denotes them as stolen.  I suppose that technically they are stolen, though their former owners were in no state to raise any objections!

I think it's a bug as other stuff I loot does not have the tag, just seeds and then only about half of them.  The other weird bit is that after a month or two in my cellar, the "Taken" tag disappears.

Anyone seen similar?