Is this a link like protocol://https://xxxx.xxx ? Leave out the two // and only use the protocol and the colon and the URL.

• protocol://URL => protocol:URL

Is this a link like protocol://https://xxxx.xxx ? Leave out the two // and only use the protocol and the colon and the URL.

• protocol://URL => protocol:URL

Here is a sample link: https://apple.news/ArcrPYZ22ShOv3HHVhPmzyQ?articleList=AE7tYMUQNSiuTjceRFk4m9Q,A4n-zguK7Tlygmr85mf4vJw,ArcrPYZ22ShOv3HHVhPmzyQ,AKxz4g-baS1K56DGhpBzjQg,A4e6Ok-xWT76nhynqOYxwZA,AiHsg1CuEQc2bxE7xzdwE_Q,AQx0rj9k3QL-ePkh1oGKC6w,AMV7x_ksnSoSur4rT7Uof1A,Aviw5qdUfQomf53Rfoce0wA,AzYvE1AoyQyiN0nairuJS8g,AS3rSUUqdRy2u0Hu_YQR60A,A0r6vlGggRdGA-OVYTwDGxQ,A6NuhVZ9sTZG4LAVcx_X9HQ,AfNkmsl3vTquaHISlWl5T7g&campaign_id=E101&campaign_type=b9bfc3d1-f673-4a33-988c-417842716eac/default&creative_id=daily_v2_summary_item-3-6:summary

When that link is opened in Microsoft Edge or Safari, a redirect page is opened and then the content is opened in the Apple News app. This is significant because in the Apple News app I can read the entire article due to my subscription to Apple News+. However, in Firefox it redirects to the article on the Wall Street Journal website which is behind a paywall because I do not have a subscription to The Wall Street Journal.

Another instance was attempting to login to the Facebook Messenger app. It opens a window in a browser to login to Facebook and then redirect back to Facebook Messenger with appropriate tokens(?) to login. When, Firefox is the default browser, I am directed to Facebook to login, but Firefox does not appropriately redirect back to Facebook Messenger with the login information so that I can then be logged into Facebook Messenger. Switching to a different default browser allows the correct flow from Messenger to browser (Facebook login) back to Messenger to be successfully logged in.

Hopefully this provides a clearer picture of the how the behavior of Firefox is different from other browsers. Perhaps this is intentional for some type of security. However, an app reaching out to login to a site to login via a browser and then redirecting back to the app is not uncommon. Another app that I believe does this same thing is the HP Smart app.