Jihn ult doing damage past Taric ult.

This happened in an aram earlier. Luckily I had shadowplay running so i could save the bug happening. It clearly shows Jihns ult doing huge damage to me with the last shot while tarics ult was on me. It should not have done damage. 100% bug. Sorry for the noise from the show i was watching in the background, was watching Doctor who on my pc on the second monitor while playing.