I have this problem with missing titles when using an omega sub theme. I have a custom content type nodes, views pages and a basic pages that are missing titles when I switch to omega or my omega sub theme. You can see them when you switch to bartik. But there are still things that I find weird. I assigned a basic page called 'home' to be the front page and you can see the title on it, but on another basic page as about me you are unable to see the title. If anyone seen this issue before any help will be highly appreciated.