User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:20.0) Gecko/20100101 Firefox/20.0 (Beta/Release) Build ID: 20130326150557 Steps to reproduce: Right clicked a link and bookmarked the link, Then pressed save on the dialog that popped up. Actual results: Then when trying to open a link in new tab with middle mouse button it appears to do nothing, right clicking also does nothing. However upon restoring the session after closing the browser the tabs are shown. Expected results: Link bookmarked and then new tab opened for a link
Updated to version 21 and is fixed.