[GAMEPLAY] Aurelion Sol doesn't get kill credit for ult

Description: I was playing Aurelion Sol and the enemy Yasuo dove me under tower. I ulted him and he was pushed back. Then he killed me. Then he was executed by the tower. :(

Observed outcome: We both die, but at least I get some cash money, yo.

Expected outcome: We both die, he gets money and I don't. Not cool.

Will add replay in a few minutes.

EDIT: Replay: https://aof.gg/game/3/2212715989 (mid lane at 10:58) Looks like his shield took my entire ult, and I never hit him with anything else (cuz I suck, I know). Does the shield prevent kill participation? I feel like if Bard can get an assist for Zhonyas-ing someone, then Aurelion Sol should get an assist for knocking someone away.