Firefox bookmarks still not working?

Hi all, I've been using Launchbar for a couple of years and gave up on getting Firefox bookmarks included in my index after having to use the vacuum places tool every time to get it to work. Thought enough time had passed for this problem to be resolved, but after checking in it seems it's not the case and the Firefox Bookmarks category remains stubbornly blank. Am I doing something wrong? I would be surprised that this topic has not been discussed since 2011 if I am not the only one having the problem..

Thanks for reading