The lack of about:config bugs me as well. I believe this lockout coincided with the introduction of Mobile Friendly Add-Ons. The pages not loading is somethin

The lack of about:config bugs me as well. I believe this lockout coincided with the introduction of Mobile Friendly Add-Ons. The pages not loading is something that started with-in the last year and it seems to be getting worse. I open a lot of things in new tabs and at least 10% of the time it fails.