"If you prefer the old behavior, uncheck the "Displays have separate Spaces" checkbox in the Mission Control preference pane. Doing so will also restore the abi

"If you prefer the old behavior, uncheck the "Displays have separate Spaces" checkbox in the Mission Control preference pane. Doing so will also restore the ability to have windows that span more than one display." From the bottom of http://arstechnica.com/apple/2013/10/os-x-10-9/11/#multiple-displays http://arstechnica.com/apple/2013/10/os-x-10-9/11/#multiple-...