I have found a work-around if anyone has the same issue. This is something to do with the recording and vibrate using the same data stream and I cannot find any documentation to deal with multiple streams correctly. Instead, I have turned off voice recording, make the buzz and then reactivate voice recording (I had to introduce a sleep before reactivating voice recording to allow the vibrate to complete), a bit of a botch; but it works. If anyone has any links to examples that do this elegantly then I'd be very grateful.

I think I'm getting the same or similar issue. Not a long press; but as I'm typing, the second TextEdit field in the View about 4 characters in. I can't make head not tail of the Backtrace. The View is called from a button in the NavigationBarItems using a NavigationLink. Error: this application, or a library it uses, has passed an invalid numeric value (NaN, or not-a-number) to CoreGraphics API and this value is being ignored. Please fix this problem. Backtrace: <CGPathAddLineToPoint+92> <+1336> <+188> <+344> <+160> <+504> <+160> <+92> <+356> <+512> <+596> <+116> <+208> <+208> <+324> <+96> <+256> <+148> <+428> <+56> <+36> <+552> <+1028> <CFRunLoopRunSpecific+608> <GSEventRunModal+164> <+888> <UIApplicationMain+340> <+414604> <+72024> <+120596> <$s11MyApp0aB3AppV5$mainyyFZ+40> <main+12> <+2240>