[GAMEPLAY] Vayne's Condemn Not Stunning Targets on Player-Made Terrain

In a particular match where I was acting as ADC (playing Vayne), I ran into a glaring bug that occurred not once but twice, both times on player-made terrain. The enemy team's jungler was Jarvan IV and two separate times during the match, he went straight for me and used Cataclysm (R), generating the arena. The first thing I immediately did was use Condemn (E) to knock him back into the arena wall. The model collided with the terrain but the stun never activated. As I recall from Patch 4.16, the note under Vayne's entry cited the following:

"E - Condemn

Now detects collision with player-created terrain (Anivia's Crystallize, Azir's Emperor's Divide, Jarvan's Cataclysm and Trundle's Pillar of Ice)"

To reproduce the bug, do the following:

1. Have a Jarvan IV and Vayne on opposite sides.
2. Use Jarvan's Cataclysm (R) on Vayne.
3. Use Vayne's Condemn (E) on Jarvan such that it makes him collide with the arena wall.

The ability should stun Jarvan IV because of the fix from Patch 4.16, but if it doesn't, the bug is confirmed and should be fixed. Additionally, if Jarvan IV can't be stunned on his own terrain (from an earlier patch), then it creates a conflict with the player-made terrain fix in 4.16