The forms previewer is hitting this in the app-crm xamarin sample.
Related bug: https://bugzilla.xamarin.com/show_bug.cgi?id=52865
btw, i am just assuming that's the issue. I think it's a reasonable assumption that the control itself is not null :P
This is for the 2.3.4 final release if at all possible.
Should be in 2.3.4-pre3. Thank you!
*** Bug 53405 has been marked as a duplicate of this bug. ***