Rune of Havoc not working properly with certain mods/gear slots

The bug is related to the use of Rune of Havoc.

What went wrong?

While trying to craft a Sentinel Helmet that initially had a T7, T3 and T3 with an open prefix, I crafted “Reduced channeling cost”, then proceded to use 10 Runes of Havoc. The T1 crafted mod (reduced channeling cost) never shuffled, not T7 nor T3.
After that I went to ask a few streamers and found out that Palsteron was trying do the EXACT same process with EXACTLY the same crafted affix, that is, reduced channeling cost on a Sentinel Helmet (different base than mine tho). He tried exactly the same and after 8 tries, again the T2 crafted mod (it crit’ed when he added it) never changed with any of the other tiers, while the other 3 kept rotating with one another.

Why do I think its a bug?

Well first of all, the chances of that happening (if you add my tries to Palsteron’s) are basically close to impossible. Second, in day 1 I crafted a +4 Warpath body armour using the mentioned method, shuffeling a T1 crafted (+1 to Warpath level) into T7, it got me 3 tries but, with every try, the crafted mod kept shuffeling with other mods tiers. And that’s the big difference with the helmet: the crafted mod NEVER CHANGED in 10 tries (and 8 for Palsteron).

Hopefully this is helpful for you guys to find out

EDIT: for some reason, just found out that it changes ONLY if you modify a different mod after you craft the one desired. Maybe something to do with that

Thanks!

Yeap. It’s buggy I think aswell. I tried to shuffle some sentinel chest and some just didnt shuffle. Once happened with T1 strenght (Crafted) then with some other random mod…
Idk what’s happening :S. Wasted 5 of those so far , definetly something is off

Same. Just wasted 5, no shuffling.

I started with a 3 mod exalted. Successfully removed both non-exalt mods. Crafted on 3 mods (so 4 mod item). Then used runes of havoc with no changes except forging potential going down.

Same thing for me. Tried 12 times to get T7 with Hybrid healt with 3 diferent glove pieces (1 had Hybrid naturaly and in the other 2 I’ve crafted it) none of them worked. T7 mod just kept stuck to the original t7 mod.

Just wasted 16 runes on two amulets trying to get flat health. Half of the time it shuffled between the same two mods. The other half it kept the same mod, which from the description it is not supposed to…