Overall I like Yosemite, but I really really hate the full screen mode. I don't remember it behaves like this in Maverick or Mountain Lion. But in Yosemite, once I click on the green circle, the app goes into full screen mode, the menu bar goes with it and worse of all, it full screen opens in a new desktop space. It would be nice to keep the menu bar intact while in full screen and keep the full screen in the same desktop space. Don't you think? Is there anyway to change this behavior?