When Call of the Brotherhood is equipped, the Heavy Stun meter does not accumulate properly.

When testing the skill Spear of Solaris, I found that I was unable to gain Glory properly. Under the same conditions—killing normal enemies—I was able to gain Glory and apply Heavy Stun to bosses as expected without Call of the Brotherhood equipped. (My gear increases Stun accumulation by 66%, so the buildup was quite noticeable.)

However, once I equipped Call of the Brotherhood, I could barely see any Heavy Stun buildup on the boss, and I was also unable to gain Glory from killing normal and rare enemies.

"

Inori#5261 が発言:

Under the same conditions—killing normal enemies—I was able to gain Glory and apply Heavy Stun to bosses as expected without Call of the Brotherhood equipped.

Looking up the tooltip explanation for Cold:
"Cold hits apply Chill and build up Freeze, but cannot build up Heavy Stun."

I imagine they didn't want both damage types contributing to different effects, at different rates, which both stop everything the monster is doing. That might deserve a review pass for cold damage builds.