I'm seeing this as well:
if #available(iOS 12, *) {
cardFront.transform3D = frontTransform
// } else {
// <#fallback statements#>
}
2019-11-01 15:08:11.414352-0700 WingMate[84481:23447277] -[UIImageView setTransform3D:]: unrecognized selector sent to instance 0x7fb65ae488c0
2019-11-01 15:08:11.432544-0700 WingMate[84481:23447277] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIImageView setTransform3D:]: unrecognized selector sent to instance 0x7fb65ae488c0'
*** First throw call stack:
(
0 CoreFoundation 0x000000010568a8db __exceptionPreprocess + 331
1 libobjc.A.dylib 0x0000000104c2dac5 objc_exception_throw + 48
2 CoreFoundation 0x00000001056a8c94 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 UIKitCore 0x0000000110bf3235 -[UIResponder doesNotRecognizeSelector:] + 287
4 CoreFoundation 0x000000010568f623 ___forwarding___ + 1443
5 CoreFoundation 0x0000000105691418 _CF_forwarding_prep_0 + 120
6 WingMate 0x0000000103f29b97 $s8WingMate20AutomaViewControllerC12panningBegan10recognizerySo22UIPanGestureRecognizerC_tF + 9367
7 WingMate 0x0000000103f27522 $s8WingMate20AutomaViewControllerC5onPanyySo22UIPanGestureRecognizerCF + 290
8 WingMate 0x0000000103f276d4 $s8WingMate20AutomaViewControllerC5onPanyySo22UIPanGestureRecognizerCFTo + 68
9 UIKitCore 0x00000001107b0381 -[UIGestureRecognizerTarget _sendActionWithGestureRecognizer:] + 57