Android mobilemovement locking up

Please see the attached project

the code under the start button

MobileMotion.UpdateInterval = 50 ' Update every 50 milliseconds
MobileMotion.Start
lblx.Text = "Pitch: " + MobileMotion.Pitch.Tostring
MobileMotion.stop

when pressed shows pitch=0 then locks up the app

removing the MobileMotion.stop makes no difference.

any help appreciated

mobilemovement.zip (4.8 KB)

moved to bug #79601