Automatically close tab for Wifi login

[cyaugin]

When connecting to a public wifi that requires some form of acknowledgement page ("login" or I believe it's technically called a "captive portal"), Windows will open a tab in the default browser (in this case Firefox) to perform this step, but then that page is simply left open in the browser.

Please implement logic to automatically close such tabs once the interaction has been completed. I believe this should be possible because, for example, my Android phones do it with their internal browser when connecting to Wifi, as does the Nintendo Switch.

[Jon]

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