As of North Star, shield operators inexplicably ADS every time they enter the vaulting animation and the shield from the game's perspective doesn't point to where the player is looking at. If you do a sharp turn at the start of the vaulting animation the shield will still point forward from the game's perspective regardless of where the player is actually looking and adjust only after the entire animation is complete.
The ADS animation also doesn't show in replay. It just looks like the enemy player kills you through the shield even though this is what actually happens https://i.imgur.com/Dar1m07.png
The ADS animation also doesn't show in replay. It just looks like the enemy player kills you through the shield even though this is what actually happens https://i.imgur.com/Dar1m07.png