League Client Size

I've been using the new league client for awhile now. When i first downloaded the client when it was in it's beta stages, the window size was 1280x720. I was used to a smaller client size so I set it to 1024x576. Well now i'd like to have my client full screen again so at 1280x720, but when I go to the window size. No other options come up. It;s just 1024x576. I don't think it has anything to do with my screen size because it is set at 1280x720. Also I tried to do the Ctrl + or Ctrl - trick but that doesn't work at all. Any help would be appreciated but I hope they fix this.

I've had this issue for months now, Good job Riot [zombie-brand-clap]