Neither blocking method is satisfactory for me. E.g., with webRequest, it detect clicks on links in Google news as being from Location Bar and incorrectly creates an extra useless tab. (I use Google news a lot and those links would open in a new tab without the extension anyway.) With webNavigation, for a real URL in location bar, it not only loses scrolling position in the current tab, it also causes the browser to waste time completely regenerating the page. I look forward to a solution with neither problem. In the meantime, I will just condition myself to use Alt-Enter on the location bar.