Autofill

I recently started a ranked queue and when I loaded into game I had gotten mid. Somebody didn't ban, so I had to go back into queue. After 3 dodges I got autofilled ADC. I'm pretty average at ADC, but mid and jungle are by far my best roles. I have no problem with being autofilled a role I didn't queue for. What I DO have a problem with is the amount of grief it causes teams. We had a person hovering Ahri. She says "Well I didn't get mid, so I'm just going to Ahri support." The game was a loss obviously. It would have been different if she had built a support item, I probably wouldve been a bit more open-minded. But she literally built full AP. Please disable autofill. This isnt the first time this has happened.