dudes trolling ya and put 20 hardpoints into bear
cb goes through bone armor but iirc bear only has like 5% so no way thats it, that must be a bug
afaik bear never had crushing blow and it was never added to it, so there's something weird indeed, and it doesn't track with the life loss you'd expect from cb anyway (which shouldn't be variable, or stay the same as HP goes down)
I wonder if the physical pierce on bone break / protector's stone is coded in a dumb way where attacks fully blocked by DR are having damage slip through.
I do know that physical sunder is supposed to work with summons, and supposedly -% physical resists are being applied to summons too
but I still can't explain a reason why only
some of bone armor would be removed on attacks that make the necro lose hp, unless the bear is dealing some magic damage or HP removal directly somehow. And since bearsmite is a hidden ability its hard to tell if it got secretly changed