DisplayActionSheet error on iPad with XF 1.2.3.6257

I'm pretty sure I wasn't getting this before but now I am getting a critical error on my iPad when selecting "Not This Time". Everything works correctly with iPhone?!

string action = await DisplayActionSheet ("Sharing is Caring", null, null, "Facebook", "Twitter", "Flickr", "Not This Time");
switch (action) {
        case "Not This Time":
            this.NavigationPage.PopToRootAsync ();
            Navigation.PopModalAsync ();
            break;
}
[NSInternalInconsistencyException: Trying to dismiss UIAlertController <UIAlertController: 0x7c4292e0> with unknown presenter.]
    0 CoreFoundation 0x074badf6 __exceptionPreprocess + 182
    1 libobjc.A.dylib 0x07144a97 objc_exception_throw + 44
    2 CoreFoundation 0x074bad1d +[NSException raise:format:] + 141
    3 UIKit 0x022bd999 -[UIAlertController _dismissAnimated:triggeringAction:triggeredByPopoverDimmingView:] + 444
    4 UIKit 0x022bd7d8 -[UIAlertController _dismissAnimated:triggeringAction:] + 56
    5 UIKit 0x022bd3c4 -[UIAlertController _actionViewTapped:] + 68
    6 libobjc.A.dylib 0x0715a771 -[NSObject performSelector:withObject:] + 70
    7 UIKit 0x024a006c -[_UIAlertControllerActionView _triggerSelect] + 60
    8 UIKit 0x0249ff27 -[_UIAlertControllerActionView touchesEnded:withEvent:] + 187
    9 UIKit 0x02440257 _UIGestureRecognizerUpdate + 13225
    10 UIKit 0x0205971b -[UIWindow _sendGesturesForEvent:] + 1356
    11 UIKit 0x0205a57f -[UIWindow sendEvent:] + 769
    12 UIKit 0x0201faa9 -[UIApplication sendEvent:] + 242
    13 UIKit 0x0202f8de _UIApplicationHandleEventFromQueueEvent + 20690
    14 UIKit 0x02004079 _UIApplicationHandleEventQueue + 2206
    15 CoreFoundation 0x073de7bf __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
    16 CoreFoundation 0x073d42cd __CFRunLoopDoSources0 + 253
    17 CoreFoundation 0x073d3828 __CFRunLoopRun + 952
    18 CoreFoundation 0x073d31ab CFRunLoopRunSpecific + 443
    19 CoreFoundation 0x073d2fdb CFRunLoopRunInMode + 123
    20 GraphicsServices 0x086c224f GSEventRunModal + 192
    21 GraphicsServices 0x086c208c GSEventRun + 104
    22 UIKit 0x02007e16 UIApplicationMain + 1526
    23 ??? 0x166dc3a0 0x0 + 376292256
    24 ??? 0x166dc1b0 0x0 + 376291760
    25 ??? 0x166da528 0x0 + 376284456
    26 ??? 0x166da2a0 0x0 + 376283808
    27 ??? 0x166da403 0x0 + 376284163
    28 TarotiOS 0x001fade5 mono_jit_runtime_invoke + 725
    29 TarotiOS 0x0029058f mono_runtime_invoke + 127
    30 TarotiOS 0x00294ff1 mono_runtime_exec_main + 401
    31 TarotiOS 0x00294d9a mono_runtime_run_main + 682
    32 TarotiOS 0x0015d25d mono_jit_exec + 93
    33 TarotiOS 0x00352df9 monotouch_main + 2681
    34 TarotiOS 0x0011f275 main + 117
    35 libdyld.dylib 0x0797fac9 start + 1