Ahri isnt actually the center of the spell, every fox fire has his own "range" and this happen often
You will use your spell near to the ennemy but they wont go on him
Every time you use the w in lane as Ahri, you can only have one or two fox fires going into the ennemi even if you are close to him and this is an important issue to fix because it's totaly random to trade in lane with this spell.
Im doing this post now since you are doing a kind of rework on Ahri and i think it's important for you to know that and to fix that
I dont know where i have to post this , i apologize if it's not the good board to post
https://plays.tv/video/59315ce9baafc720c4/ahris-nerf-baited-me-so-hard?from=user if you want to see the action