"Improve merchant name or logo" leads to a dead-end

Attempting to provide merchant feedback on any cleared American Express transaction leads to a dead-end from which the “done” or “<” buttons do nothing.

  1. Select any cleared transaction on a linked American Express card
  2. Select “Improve merchant name, or logo”
  3. Search our list of merchants (in this case Hotels.com, and select it, though I’ve tried other transactions and merchants and the behaviour is the same)
  4. Select “Next”
  5. “Thanks for the feedback” appears, however clicking on either “Done” or “<” does not do anything and the app has to be force-closed and restarted. Upon restarting, the transaction has not been updated with the merchant provided in step 3.

iOS 18.1.1
Apple iPhone 13 Pro
6.4.0