Flask Effect not applying for Unholy Might from Sin's Rebirth

Flask Effect does not apply for Unholy Might from Sin's Rebirth.
According to the new changed Onslaught, which made it a Buff and therefore Onslaught benefits from Flask Effect if Onslaught came from Flasks, Unholy Might (also a Buff) from Flaks should have the same rule applied.

Unholy Might does not get any benefits from Flask effect tho.

this isn't a bug...

the change to the silver flask was only to make the 25% effect rollable for mageblood options.

this doesn't mean all buffs from any other unique flask will scale from flask effect as well.