The Thug feat duration increase to rage is not calculated into all furor effects.
Change mentioned here:
https://discord.com/channels/422865590814769163/594162994724864030/957427207242915850
Tested with https://wiki.efupw.com/index.php?title=Barbarian_Rage#Inspiring_Rage
Bumping this as an unfortunate victim of the bug.
Bumping this up. My pc's rage-duration seems suspiciously short, despite having this feat.
It probably is just not stacking with the newer duration increase provided more recently in the chapter post release of v6.