Im noticing that anytime this vendor appears-- she has the EXACT SAME rotation of unique gear for my character--- its never a different item

Im on a 4 item rotation

-zap staff
-frostweave tunic
-goremaker
-omalleys belt

thats it
never other items--- ever
and ive watched how to make that vendor spawn in story mode, so ive seen her lots.

is it possible that that our characters are vendor locked for specific items? I think its a coding bug.