[GAMEPLAY] Renekton vs Fiora Bug: Riposte

Fiora's Riposte ability is suppose to completely block (Parry) a hit, thus blocking any on-hit effect AND damage from the hit, AND return the blow with a little magic damage. (Essentially a block & counter-attack ability). This spell works very well against every champion and every situation ... except Renekton.

Situation: -Renekton player approaches the Fiora player, ready to use his stun -The Fiora player, being the skilled player that he/she is, uses the Riposte ability to counter the inevitable attack -Renekton hits Fiora with his stun -Fiora's Riposte blocks the hit, and "PARRIED" is displayed above the avatar -Fiora is still stunned -Fiora is still damaged -Riposte still returns the blow with magic damage

This occurs EVERY SINGLE TIME. This is not an occasional incident. If you attempt to do this in a game right now it will happen.

** What is the bug here? It says "PARRIED" so shouldn't it block the hit? Should it not be parrying at all?**