Sinistral omen - helmet - rarity

Interaction of sinistral omen (probably the same for dextral but not testet) and rarity (beeing a prefix and suffix in this case, at least I think this is where the problems arrise)

Test case A: helmet has 1 pre 3 suffixes(1 is rarity) - sinistral +essens of abyss

removes sufix rarity - adds mark as prefix

Test Case B: helmet 1 pre 3 suf no rarity - sinistral +essens of abyss

prefix is now mark as expected

Test case C: helmet 1 pre (rarity) 3 suf (also rarity) - sinistral +essens of abyss

doesnt except the essens at all


in conclussion : something not done right in handling rarity, probably just nameing - "itemrarity" -> "itemraritypre" and "itemraritysuf"