iphonexs max crash, and it always happened when the app go back from background to foreground

Question

the crash only happened on iPhone XS MAX and go back from background to foreground

[CAGradientLayer _clearContents]: unrecognized selector sent to instance 0x2815c31a0

CoreFoundation  ___exceptionPreprocess + 232

1 libobjc.A.dylib   objc_exception_throw + 60

2 CoreFoundation    -[NSOrderedSet initWithSet:copyItems:]

3 CoreFoundation    ____forwarding___ + 1412

4 CoreFoundation    _CF_forwarding_prep_0 + 96

5 UIKitCore -[UILabel _startMarquee] + 3332

6 libdispatch.dylib __dispatch_call_block_and_release + 32

7 libdispatch.dylib __dispatch_client_callout + 20

8 libdispatch.dylib _dispatch_main_queue_callback_4CF + 1012

9 CoreFoundation    ___CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16

10 CoreFoundation   ___CFRunLoopRun + 1888

11 CoreFoundation   CFRunLoopRunSpecific + 452

12 GraphicsServices GSEventRunModal + 108

13 UIKitCore    UIApplicationMain + 216

14 金囿   main (main.m:14)

15 libdyld.dylib    _start + 4

Is it killed already during background, just iPhone XS max has different refelection.