In my case it was the result of a somewhat bad install. One of the small mods had overwrote parts of NEJ. There were a few characters names that had weapon descriptions/dialogues instead of names. The other was Yuxonemei iirc. Played through without other problems and finished NEJ though. It was most likely COM encounters or one of the NPC mods in my game.
Aside from the orc, the sentinels one (or two) levels above Yxunomei's lair also had messed up character names. Yxunomei herself, though, was correct in my build.
Wonder what mod causes this, then? I do not have CoM Encounters or any (stand-alone)
NPC mod installed.
One problem with this bug is that I never got to see the NAME of the weapon, only the info and stats. If I'd gotten the name, maybe someone could have recognised it, and we'd get confirmation on which mod causes it... The first weapon (the one that replaced the orc dialogue) was some kind of poison flail. The second (the one that replaced the sentinel dialogue) was a mace/morningstar... don't remember any details on that one, though.
Well... like said before, luckily this bug isn't fatal (at least not yet
).
//DelNaja