When I click the button and open a new tab, the address bar (awesome bar?) is already filled in with "moz-extension://somethingsomethingsomething". It used to open to an empty address bar until yesterday (8-29-17) and that's what i would like to have now. I use the New Tab Tools extension which also was affected at the same time (replaced by mozilla new tab page). After reinstalling NTT it is now functioning again (other extensions were also affected and had to be reinstalled as well), but if I wish to open a new tab to go to a website I first have to erase the "moz-extension://" stuff before I can type in the correct address. Very annoying. Example: Say I want to reference something on Wikipedia. So I click "open a new tab", right click the address bar, select all, backspace, and finally type in Wikipedia.com. Wasn't like this until yesterday.