So, I recently chopped some firewood at Pinewatch (using my follower to chop it) and then used it all up to make some arrows. I went off to do a few quests, then I went to a merchant to sell off my stuff, as usual, and I see 6 pieces of firewood in my inventory. I figured I might not have used it all, so I sold it off, and went on my way.

I continued doing a few quests and delving into some dungeons, and then I went off to another merchant to sell my items, and that's when I see it: 6 pieces of firewood in my inventory, yet again. I never chopped any wood and I was very confused. I assumed I might have reloaded a save from before I sold the firewood without realizing it or something. So I sell the firewood.

Now, I'm certain this is no coincidence, because after that it's happened around 8 more times. I have 6 pieces of firewood that just keep on showing up in my inventory and eating my space no matter how many times I try to sell it, it keeps appearing a few hours later. What's the deal with this? Anybody ever encounter something like this?