I updated to Windows 8.1 yesterday and when I search for anything like "Device Manager", "Power Options", "User Account" or "Optimize Drives", there are no search results at all. These are all settings related and in Windows 8 would show up under the "Settings" category in the search screen. Oddly, they show up in search results for a minute or two after restarting Windows. Is it a bug? Anyone else experiencing this issue?