There are some champs that shut off the willpower mastery and also many players run despair, so too many debuffs and willpower becomes less effective.
Kushalas blessings and block heal are also not working
I was using sinister Vs bullseye and couldn't heal anything, and I just used kushala and her heal on block and her heal from blessings SW relic both didn't work against red skull idk
if you’re accidentally using a second deck that’s not using your most up to date masteries, that may be why
Nah I checked it all it's all normal what it should be
Post a picture of your deck so we can see your mastery point spread.
This screenshot is what you need to post. My initial guess is that you don't play BG much and are doing it for the anniversary rewards, and this, your BG masteries aren't set.