[POE2] Rare mob on Vaal Factory bug

Found this archer guy that prevent me from complete map 2/2/2025

appear as half sunk to the floor
can follow you everywhere on map (go up/down stair)
can attack you even use it skill
can't target it (no HP bar)
somehow can't walk pass it (still have collision box)

already try...
-teleport out and go in
-re login
-damage with AoE skill
-lure it to walk pass stair