Glimpse of Chaos + Hinekora's lock

When I used Hinekora's lock on a Glimpse of Chaos with 2 implict modifiers, one of the results when vaal orbing can be that it turns into a rare helmet.

So when I finally hit the desired result with hinekora lock, something strange happened. When i hovered over with a vaal orb, it showed the result of a rare helmet with modifiers it should not be possible ot get. Such as "Nearby enemies have #% reduced cold resistance".

Furthermore, when I hovered over with vaal orb again, it suddenly showed new results. I did this hundreds of times, and it appears it swaps between 10 or so different options in a cycle. I tested this with several hinekora's before I ever used vaal orb on it. I spent maybe 12 hinekora total, because many attempts failed as it just removed a modifier from unique version, or turned it into another unique helmet. When these options occured, it worked "normally" as everytime I hover over with vaal orb the same result would appear.

I hope I make myself clear so far. Anyway I found a really good modpool at last, and I decidet to vaal orb. What happened then was that I got completely other modifers than what hinekora showed would happen. Atleast the helm turned rare as predicted, but the mods were different in every manner.

I think this is a bug?