Hi,
I've just downloaded the latest update of your Xamarin forms Library (14.4.0.15). I'm using your sfSchedule control to display some appointments. I can load correctly my appointments on the schedule view but, when i click on one of them, i get always a null selectedAppointment. I've tried to use your SampleBrowser and i get the same result (using all type of views).
I had this error some time ago with another version of your library. I'm using Xamarin.Forms (IOS) and debugging using simulator and a real iPad.
Using Android i don't get this error (selectedAppointments is not null).
Thanks for your attention.