Setts Ult not correctly registering where him, or target are [Gameplay Bug]

Regarding Setts ult, I have found that the game doesn't seem to properly register where Sett and his Ult target are during the animation of Show Stopper. I have had this issue a few times and it has gotten me killed and cost me kills because of it. While Ulting an Illaoi, her tentacles slap where I was and still dealt damage to me, as well as I have used The Show Stopper to pull a Kindred out of her ult, but it still did no damage even though she was clearly outside of her ult radius, as it registered her as still being in the ult until directly after impact.

I have also encountered a problem where I attempted to use Sett's E [Face Breaker] and the target took damage, was hit by the slow, but was not pulled towards sett. This may have been due to the large size of the wall.

Show Stopper vs Kindred Show Stopper vs Illaoi Face Breaker Bug?