something definitely changed on the bear end as the dmg goes through bone armor when the knockback occurs and not every hit
you can see the first hit in the video does way more dmg than the hit at 16 seconds that doesnt trigger kb
its possible bear smite is being replaced by regular smite and the ed is double dipping?
If it was just smite dealing extra %ed or whatever, the bone armor would be fully removed and damage spills over
KB is still 50:50 for smite so you can know it was a smite attack on every attack that knockbacked but can't know if a non-knockback attack wasn't, I mean you can just look at animation and listen to sound effect and length of the animation to know for sure though
but yeah its got to be something weird with the bear smite skill on the back end that's spilling over damage. And its not just crushing blow being added unless this guy has different %dr than he claims, because a 3326 hp char with 46% dr should lose ~179 hp to a cb. Although if the druid has a -10% bone break maybe it could be 36% dr after pierce, so ~213 lost? Still losing way more than that.
there's nothing in any patch notes about bears being changed.