Can anyone explain this?

Adam's personal buffs triggered while his sovereignty buff is active, cannot have their ability accuracy reduced by champion abilities. Upon reaching 40 hits of the counter, he gains a fury buff which is supposed to be immune to AAR. However, in the example below against Rintrah, he does not gain the fury, although sovereignty buff is up. I suppose this is a bug, but maybe I'm missing something? Please let me know.
Video example:
https://youtu.be/AYzNFEVs2zE
P.S.
And by the way, this is the second potential bug I post about Adam, the first one with Absorbing man matchup is yet to be confirmed:
Link to the post
Video example:

P.S.
And by the way, this is the second potential bug I post about Adam, the first one with Absorbing man matchup is yet to be confirmed:
Link to the post
0
Comments
OP, this looks like a bug. I will bring it to the team.