Bone Offering & Brutus' Brain inconsistently working / not

https://www.youtube.com/watch?v=szjP1el0uso&lc
observed on sept 14th

12.96s duration on bone offering
lvl 2 skele warrior so it's obvious when it's dying to damage (ohko)

0:33 cast offering
0:37 premature death
1:04 cast
1:16 normal expiry
1:42 cast
1:55 normal expiry

it's not happening all the time, but sometimes it just dies to damage and I'm not sure why. the hit that killed it at 0:37 appeared to be a white mob's auto attack?
https://poe2db.tw/us/Bulbous_Maw

it was also noted here that pain offering seems bugged too:
https://www.pathofexile.com/forum/view-thread/3840571