Steraks Gage shield dissappears far quicker then it should

[GAMEPLAY] - Steraks Gage (~3k hp) shield disappears in less then a second during a fight

Popped stone plate at 34:03

Steraks gage shield pops at 34:05

Steraks gage shield dissapears before 34:06

Not sure how to reproduce. Possibly an interaction between chain knockups and steraks or a bug with stone plate. Checked replay and kalista only had 2 active rend stacks when the shield popped.