This has become more noticeable post-campaign due to more situations where I have to be mobile to avoid death. The bear fails in a few ways.
#1) Sometimes the bear decides it is more important to charge off screen backwards to kill a bug at low life than to stand near me and deal with the horde that is coming. This is especially annoying when you need this bear to handle the Mage or Nemesis you are about to pop and the bear nopes out as you click to summon. And it won’t come back until it is done with whatever off-screen thing it thinks it needs to attack.
#2) Sometimes the bear runs in circles. Literally a screen full of enemies and it just runs around. This appears to be a flaw due to me running around to avoid death. So bear is trying to stay in front of me or something? I don’t know what the logic is, I just know that is makes dangerous situations even more hairy.
#3) Bear always casts Earthquake when it is up. There is one tiny spider coming at you and a Champion a few steps back. Bear EQs the spider when a single basic attack would have done the job instead of saving it for the champion.