Interaction where Seismic Impact doesn't stun

[danielfr]

Had a strange game where Abrams used Seismic Imapct and landed within range of a Haze who was in the middle of Bullet Dance. She did not have any form of Unstoppable, yet Abrams dealt no damage and no stun to her. What happened?

Match ID: 55237769
Attached is a clip of the interaction I have described