Trundle's Pillar knockup does NOT pop Banshee's shield

Banshee's Veil Unique: Grants a spell shield that blocks the next enemy ability. This shield refreshes after no damage is taken from enemy champions for 40 seconds.

Granted I read that it in fact, "will not block damage from persistent AoE spells such as: Anivia's Glacial Storm or Nasus's Spirit Fire." So just the pillar next to you shouldn't pop the spell shield.

HOWEVER,

When hit by Trundle's Pillar knockup, it SHOULD pop the shield but it doesn't. This happened last game when I was playing as the troll.

That's why I am reporting this as a bug, I hope Riot can look into it.