[GAMEPLAY] Diana W-Pale Cascade vs Yasuo windwall

Normally when the 3rd sphere detonates, Diana's W-shield will begin its cooldown and she'll get a bigger shield. If any of her spheres explode on yasuo's windwall, the spell will not go on cooldown regardless of the 3rd sphere detonating on a unit or the windwall.

Steps to recreate:

1. Have Diana cast W-Pale Cascade
2. Have Yasuo cast W-windwall.
3. Have Diana walk into the windwall.

Result: all orbs destroyed and Diana doesn't get the 2nd shield and her spell does not begin its cooldown until the normal timing for the pale cascade to expire passes. Expected Result: all orbs are destroyed and Pale Cascade begins its cooldown. Probably doesnt get a 2nd shield?