Firefox is blocking downloading of electronic invoices ("e-faktura" in Norwegian) from my bank. This happens when I am using internet banking. It was not a problem before last update. It does not happen when I use other browsers. It worked with Firefox previously. The last update may have changed some security settings. (That is the logic explanation). I have tried to look at the settings, but cannot find what to change. What settings do I have to change? Other explanations?