from Fioras W: "[...] This stab [...] stuns them if Fiora blocked an imobilizing effect with this ability."
meaning any stun Fiora blocks should in turn stun the enemy, right?
Kennen ignores that. Whenever Fiora blocks the third ability from Kennen, she does not get stunned but keeps her 2 stacks and does not activate the counter-stun.
The Kennen Fiora matchup is already bad enough, instead of buffing her already strong matchups, why dont you fix this interaction to reduce the frustration of being firstpick in ranked?