Tryndamere Dies through ult by some kalista spells

I'm not quite sure which killed me, but it involved her: I was hit by the knockup of the connection with wukong, but as I read on wiki that doesn't deal dmg, it just knocks up.

It also could have been the shared connection with that player or the rend, but Tryndamere's skill went on cooldown and he died without the 5 seconds of immunity.

All I can think about is that one of her skills is doing "Pure Damage", like how smite used to kill Tryndamere through his ult.

If you get some bug testers to check that and fix it, that'd be great. Thanks.