Just got penalized for a dodge when I had Zyra select in blind pick.

I had Zyra selected and everyone else on the team also had a champion selected. When the timer went off it kicked us out and gave me the abandon 5 minute timer... In blind pick you don't have to lock in so I don't understand why this happened. At first I thought an enemy dodged but it gave me the penalty even though I had Zyra selected.