The exact same code for iOS and macOS because Catalyst. Using the keyboard to paste on my iPad does work correctly, but it paste twice on my Mac. I am talking about pasting text inside and input box in a web page running on WKWebview.

urlRequest.httpShouldHandleCookies control also the absorbtion of set-cookie, I thought it was taking the cookies from the WKWebview. My mistake, I will go hide under a rock now to hide my shame. This whole post should be deleted since it is useless.

I tested further with a tool to see the https traffic (Charles). I can do this when I start the app urlRequest.httpShouldHandleCookies = true //Always inject cookies Or I can do this when I start the app urlRequest.httpShouldHandleCookies = false //Never inject cookies But if I change it on the fly, as soon as it is set to false, even if I set it to true later, it will never inject the cookies. urlRequest.httpShouldHandleCookies = isSendCookies //Never inject cookies