Just found a bug that's starting to annoy me. When you put Tulius' armor on a mannequin (in my case, in the Falkreath Hearthfire home), and then later switch it out with a new armor, the next time you come home the mannequin will be wearing Tulius' armor again (but will also have the new armor in its inventory). If you take it away, it seems to come back again anyway. Note that these are each unique Tulius' armors, and I'm now up to about 5 in my collection. Any known fixes for this?