Some users criticised Mission Control in Mac OS X 10.7 Lion for not offering an unobscured "Exposé" view of all the windows in single workspace: windows of the same application are always hidden in bundles. This issue was fixed in Mac OS X 10.8 Mountain Lion, however, with a checkbox in the System Preference pane allowing a user to choose whether to group windows of the same application. Some features of Exposé and Spaces from OS X 10.6 Snow Leopard did not return, however: it does not show the names of the windows displayed, nor does it return the added functionality provided by Mac OS X 10.5 Leopard multiple desktops feature, known as "Spaces," which allowed users to drag and drop windows between desktops with a single click, and also allowed for larger thumbnail previews of each desktop in a 2D grid when in use.