I'm away from home for a few days and will try to fix my system as soon as possible. Still, I believe that something went wrong with the builds for the Q4 release. This a screenshot over firefox for the Q3 list of packages, https://imgur.com/GV71xgT and here is the same for Q4, https://imgur.com/0VOXYik
So it might be that when I removed firefox and installed midori the refered lib was removed as an orphan package, but I can't re-install firefox simply because its not there