I found a bug with Skirmisher's and Tryndamere ult

It may / may not have been that the Tryndamere was bad or not but every time I smited him (the red one -true dmg on hit) I would kill him during his ult. (He could have timed his ult poorly, but it seems that every time he ulted I would kill him)

Smite > Tryndamere

I was playing Fiora and would smite him and use my ult for the extra true damage. I did kill him a few times without my ult but still used smite.