[Affected versions]: Nightly 63.0a1 [Affected platforms]: Windows 10 x64, Mac OS X 10.12, Ubuntu 18.04 x64 [Prerequisites]: - set the pref dom.payments.request.enabled to "true" - make sure to have at least one payment method saved on the profile [Steps to reproduce]: 1. Go to “https://rsolomakhin.github.io/pr/email/” and click on “Buy” 2. Add a saved payment method and type in the security code 3. Click on “Add” to reach the “Add Payer Contact” screen 4. Type in an invalid e-mail address, such as: test@@domain.com [Expected Result]: The “Save” button should be grayed out due to the invalid e-mail address and the red field border should persist until a correct address is typed. [Actual Result]: The incorrect e-mail can be saved and it is also used further in the payment process even if the red warning field border is displayed.

We use <input type="email"> so validation is done but we don't check validity before saving which is bug 1475521.

Please note that the payment is processed even if the selected contact information (e-mail) is invalid. Given that bug 1475521 is indeed verified fixed, how should we approach this issue?

Sorry, I meant to dupe to bug 1476345.