[GAMEPLAY] Morgana Soul Shackles strike after escaping with Kassadin Rift Walk

Morgana's Soul Shackles (R) activate after three seconds in range, causing a stun. If Kassadin Rift Walks (R) out of the shackles at the end of their timer, he will consistently receive the damage and stun despite completing his movement. Presumably one of these effects is incorrect - an interrupted cast shouldn't allow his blink, and a successful cast should escape the stun altogether. I was unable to see exact timing here, but I believe the shackles are popping during his cast duration: Binding + Shackles at level 6 followed by a Rift Walk when possible will produce this effect.

1. Apply Soul Shackles to Kassadin.
2. At the end of the cast (last .5 seconds? 0.25?), Kassadin Rift Walks to a point outside the Shackles.
3. Shackles pop damage and stun while allowing the walk to complete.