10 Ban System and Not Banning

So I remember reading specifically about having the option to not ban from http://na.leagueoflegends.com/en/news/game-updates/competitive/10-bans-regular-play-coming-soon where it says:

We’re adding an option to select “No Ban” if you want to live dangerously. We also wanted to add a failsafe in case two or more teammates rush to ban the same thing in the last few seconds – you’ll default to “no ban” instead of incurring dodge penalties.

I tried that in a ranked game and it counted as a dodge because I didn't ban a champion. What gives?