I had a strange problem yesterday with a family of badgers.
We engaged the 3 of them and killed the first at which point the remaining two vanished. We were still being hit and the messages changed from "A Lowland badger hits you" to "Unknown hits you" but we could not target. I managed to pick up "Unknown" using the nearest NPC button ( a dangerous thing I hate doing) but just got that it was too far away to hit. Then the badgers came back and we could hit them for a while, then they vanish again. This happened four or five times before we killed them all.
Obviously we reported the bug
Are other people getting this or are we just lucky?