Updated to Firefox 86.0. MacOS. If I now attempt to access my router using its local address (192.x.x.1) it simply doesn't happen. I've allowed pop-ups for the sign in window - although it never needed it before. Tried http and https. Also have a bookmark for it which no longer works. All I get is a blank tab, yet there's some endless communication happening according to Menu Meters Rx/Tx display. If I do the same as always using Safari I can log into the router exactly as I always have done. Why? What has been changed? What has Firefox blocked? Help please.