Urgot Ult Suppression Bug

Couldn't record it, but there is no mistaking this. Even the enemy player commented on the bug that saved them.

I was one auto from death under a tower, reeling in a Diana I had just ulted. No other enemies near me. The animation to grind her up started to play and she auto attacked me. Just smacked me right in the face, killing me, and she walked away after eating an urgot execute 1v1.

It was not any sort of proc or shield, but a very unmistakable auto attack animation.

I think the suppression is somehow briefly breaking in select circumstances.

Curious if anyone else has seen this? I'm quite certain about it and might try to recreate it if nobody else has seen it.