[BUG] Adyen custom URL scheme redirect not delivered to app after successful Pay by Bank (Plaid) flow — RedirectComponent onDidProvideDetails never fires

[RaviDxFactor]

Describe the bug
After a successful Pay by Bank US (Plaid AIS) flow inside Adyen pay by bank component(WebView) opened by RedirectComponent, the custom URL scheme redirect (fsf-exerp://bank?redirectResult=...) is never delivered to the host app on iOS 26 simulator. onDidProvideDetails never fires. The cancel path works correctly — when the user taps the X button, Adyen pay by bank component(WebView) fires and ComponentError.cancelled is raised as expected.

What happens

1. App calls /initiate-adyen-request → backend returns a redirect action with a checkoutshopper-test.adyen.com URL
2. RedirectComponent.handle(_:) opens adyen native component(Webview)
3. User completes the Plaid bank flow inside the WebView
4. Backend redirects to <project-name>://bank?payment_method_type=BANK_ACCOUNT&operation_type=ADD&redirectResult=<token>
5. App never receives the URL — AppDelegate.application(_:open:url:options:) and onOpenURL do not fire
6. adyen native component(Webview) remains open, stuck on the post-completion page

Screenshots

adyen-ios	5.23.1
adyen-3ds2-ios	2.4.4
adyen-networking-ios	3.0.1
iOS	26.0.1
Payment method	paybybank_AIS_DD
Integration	RedirectComponent → SFSafariViewController

Relevant source code
https://docs.adyen.com/payment-methods/pay-by-bank-us/ios-component?tab=advanced-requirements_2

[descorp]

Hey @RaviDxFactor

This is a known bug/limitation on the Plaid side. For reasons that are still unclear to us, Plaid fails to redirect back correctly within SFSafariViewController.

Known Workarounds:

1. Enable ADP gluepageJSReturn: Reach out to Adyen Support to enable this feature. It renders a "Click here if you are not redirected" UI instead of a blank page; clicking it will re-attempt the redirect to your app.
   OR
2. External Redirect: Redirect out of the app using UIApplication.shared.open(action.url). (Note: This is not possible when using Sessions).