I use Windows 8.1. My Mozilla Firefox 39.0 (abbreviated to FF) comprises many add-ons, one of which is AdBlock Plus 18.104.22.168 (abbreviated to ABP). Certain websites contain links such as 'Share on Facebook' (SOF) or 'Share on Twitter' (SOT) (call these links buttons). Clicking these buttons should open another separate browser window that already will have, displayed and prepared to be posted, the social media page and the message box.
Even with ABP operational, buttons for 'Share on Twitter' still operate normally.
Despite disabling ABP on all such websites, buttons for 'Share on Facebook' fail; nothing pops up. So what's the problem? The problem seems limited to ''Share on Facebook'.
Reply to user 'Inkbug': The following refers to
about:preferences#content in FF.
After 1 and 2, I added the aforementioned websites to
Exceptions, but the buttons still fail.
After 3, I disabled FF's blocker by deselecting
Block pop-up websites, but the buttons still fail.
Reply to user 'Loic' below: 5. As advised, I pressed F12 to display FF's console, but it's blank.
Reply to user 'MC10': 6. This implies only one way to block buttons, but I never enabled (or knew of) this filter, before you commented on it.
Reply to user 'DavidPostill': 7. SOF fails for the following websites for contest entries, which require one to register and enter first, but I do not expect or intimate this for anyone:
Reply to user 'Jaime Santa Cruz': This problem vanishes and ceases in FF's Safe Mode!
Finally, a positive and successful, but temporary, solution! But what's the problem?