Something is borked with the Spotlight on my iPad. I first noticed the no apps in Spotlight the day before 8.1.1 came out, and then after installing the update they were still missing. Today it's working, but then I tried another test. I typed "guardi" on my iPhone and it auto fills with Guardians of the Galaxy (film) on Wikipedia, then the album on iTunes, and then the Bing search results. On my iPad everything is blank, even when I fill in the full name for the film. Events, notes, reminders, etc are all showing up fine, along with apps suddenly working too. And yes, I've tried rebooting (even installed that update) and toggling the switches in settings.