Another "feature" caused by an untested release of Mozilla's daily "Updates....
When I right-click a link in a webpage and select "open in new tab", the new tab appears with the link name in it but I have to select that tab to see its website. Didn't have to do that in previous versions of FF.
Oh, yes, I UNCHECKED the "Don't open new tabs until selected".
Solved! Go to Solution.
Check this setting in the about:config window:
You can check for problems with the preferences and if necessary rename or delete the prefs.js file and a possible user.js file to reset all prefs.
Such settings can also have been changed by an extension.