Renekton W frequently not activating

In my last two games as Renekton, the W has frequently not activated when i press the button. Often pressing it twice or three times was necessary for it to activate and even then it was not guaranteed. I have confirmed it is not an issue with my keyboard and I have not had the same issue with any other champions. I tried switching between normal and smartcast and it had no impact. I have not experienced this before my games today and yesterday