Facebook Login opening other apps
When using Facebook to log into others apps, it opens completely unrelated app. e.g. I am trying to re-login to my Nike Running App after resetting my phone completely and selected the option to sign in with Facebook. What happens next is mind-boggling, the sign in prompts me to open an unrelated app (in this case Tunein Radio). This the second time that I have noticed an app doing this. This is annoying because I couldn't log my run this morning.
iPhone 6s, iOS 9.3.1