There seem to be an issue with fury generation after a gear change
I normally run with the bladed gauntlets, and the 1 fury/s passive (Wild nature).
Fists are my secondary weapon, so it is easy to monitor fury generation.
I noticed today that after zoning in a “Megaboss” which had been engaged, after I equipped the proper build, I was not generating fury from the passives, only from active hits.