Minecraft PE 0.9.2: Infinite Worlds Not Working

So i got the update i was super excited sort of. I updated and went into the world creation area to make a new infinite world. I was greeted by the infinite choice being the horrible dark grey. I instantly went to mojang.com to see what was up with that. It said that older devices were given a warning when making an infinite world. I though "Ok as long as it still works". I click on infinite and It said that infinite worlds weren't supported on this device. I was wondering why since Mojang's update list just read it would give you a warning. That makes no sense to me and I think it might be a bug. Also this is on an older device which is my Ipod 4g where infinite worlds were working fine before.