Hi, I have an issue with Steam on Yosemite. When I start the application, the icon is showing in the dock with the small bullet underneath. But no windows is displayed. I can use the application menu without any issue, like asking to see preferences pane but it does not show up. If I look in the Windows menu, I have the list of all windows that should be displayed (steam, friends, preferences...). If I right click the dock icon, I can do show all, hide, unhide... all the normal commands but still no Windows are displayed. I have uninstalled steam (deleted the app but kept files), downloaded the latest version, installed it. Then the app was behaving normally. Now the Windows are not visible again. Any idea on how to solve this?