product · inferred from evidence
Cross-Origin-Opener-Policy
A response header that controls whether a page can open cross-origin popups.
- PayPal button click opens login overlay plus an empty popup window
After clicking a PayPal button loaded with the paypal-js SDK, a login overlay appeared but at the same time a small empty popup window opened on top of it, hiding the login form and breaking checkout. It started suddenly across all shops on