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Firefox Proxy about:blank
I installed a proxy on Firefox. On the website facebook.com when I click on a button that open a new firefox window to connect my instagram account to my facebook page, it opens a white page with "about:blank" URL instead of the instagram registration page. What does it mean and what am I supposed to do to solve it?
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This might be an issue with the Facebook Container extension that prevents opening links to external web pages.
I have the same issue, I unstaled Facebook Container.