Is there any chance of fixing Qiyana's ult hitbox on north-facing terrain?

tl;dr the hitbox of the explosion is slightly south of the edge of the terrain.

This means that if the explosion is facing south, it can and will hit champions who aren't even touching the explosion effect. If it's facing north, the explosion won't hit champions even if they're touching the edge of the explosion.

The explosion is essentially larger when it's moving along south facing terrain, which causes a lot of awkwardness and inconsistency when playing Qiyana.