Address 1.10 silently introduced a change to how AddressItem deals with hidden fields, #3269345: Regression: hidden address fields are no longer present in the array → . Hidden field keys are no longer present in the address array.
Stripe.php blindly assumes all field keys are present, and will produce an "undefined index" notice with Address 1.10 if any address fields are hidden.
Unless this change is rolled back in Address (seems unlikely), Stripe.php needs to check each field key is set before attempting to use it.
Fixed
1.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Patch looks good. I'll duplicate the logic in StripePaymentElement.
Automatically closed - issue fixed for 2 weeks with no activity.