iOS 13: Searchbar crashing when cancel is hit repeatedly.

I'm getting a crash when users click the cancel button repeatedly:

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Nested internal _UISearchBar transitions not yet supported. This is an internal UIKit bug.'

Steps:

- Launch a window with the search bar showing.

- Make the search bar text field the first responder. I have the cancel button enabled, so it shows up.

- Tap on the location of the cancel button a few times.

- Watch the app crash.

I've instrumented the delegate, and it looks something like this:

kb: should begin editing
kb: will show
kb: did begin editing
kb: should end editing motion: true
kb: should end editing motion: true
kb: should end editing motion: true
kb: did show
kb: canceled in motion: false
kb: should end editing motion: false
kb: will hide
kb: Did End Editing
kb: should begin editing
kb: did hide
kb: will show
kb: did begin editing
kb: should end editing motion: true
kb: should end editing motion: true
kb: should end editing motion: true

where motion indicates that we received either the keyboard will show or keyboard will hide notification without a did show or did hide response.

Any ideas for a workaround?