The new unique helm when used stops damage immunity from furyleap/maul and the warcry tree from working properly. I tested this on a bear druid with the helm equipped I die everytime when attempting to use the damage immunity to avoid lagons eye beam or the circle aoe attack. When I switch helmets the damage immunity works as intended and I can avoid these attacks with proper timing. I tested this x6 times to make sure I wasn’t messing up my timing. I died every time to the first attack with seed on, then the next run with a different helmet I avoided damage every time lagon used those abilities over a 2minute fight.
I’m not sure if it’s specific to bear form or if other sources of damage immunity are effected. I suspect it has to do with the % chance to not take damage stat. When I get home I plan on testing with wall of nothing to see if that is bugged also.