Has anyone had random Dwarves show up on the edge of the map, possibly at the same time as a invasion but separate from them, who then go on to stand there doing nothing (and usually just get killed)?
I've had it happen twice now in my current fort. Or I at least found them when the invasion came after pausing to do a sweep around the map, checking to see if anyone was outside before closing the gate. One was called a Trader, the other a Hauler (Urist Dwarfyname the Trader/Hauler or however the names go), neither appeared in Dtherapist, and only one was while I had a caravan on map (not even a Dwarf one). The info pages for them were just basic appearance/race entries.
Just trying to figure out if I bugged out a merchant or something weird, they don't seem to cause any issues, besides their own death. I'm on v 3a, and I don't think it makes a difference but I do have an Armok's Ward at the entrance. But I didn't think that would make anyone avoid coming in, just spot some of the weird.