Just noticed this little quirk right here... Shifting out of Bear Form immediately resets Vengeance to 0.

Rebuffing, debuff removal or battle-ressing during phase transitions or inbetween pulls will all have a significant impact on a druid's threat generation. It somewhat echoes of the 3.x Resto Druid, who felt similarly punished for leaving Tree Form for any reason.

I would prefer if Vengeance was merely suppressed like Dash, instead of outright removed.