This has happened alot during my solo playthrough where my wolf starts doing 0.6 damage to enemies (after DR). Upon closer inspection, my wolf only does 1-7 crush damage to everyone.

The only way I've managed to fix this is to retrain my character from scratch. I'm not sure exactly what causes this but I'm pretty sure it has to do with status afflictions causing my wolf to unequip the default hidden pierce weapon and use fists. Resting doesn't fix the issue though.

There's a few more wolf companion bugs I've had too:

The wrenched knee affliction causes my wolf to play the running animation much faster while only running much slower. This amusing visual bug happens both in and outside of combat and remains even after resting to cure the wrenched knee. Combined with another affliction like hobbled it's funny to watch but should definitely be fixed.

Once, my wolf was stuck at moving at -2 movement speed, about half the speed of my unbuffed character. There were no status afflctions or effects and was only noticeable when combat started. The only way I was able to fix this was by retraining my character.

This is still happening in 3.9.3.88783 for me even after reinstalling. This bug definitely happens after resting to clear by wolf's negative status effect from being knocked out (maybe it's wrenched shoulder or sprained wrist). I think resting to clear the negative status effect causes this bug to happen where he is stuck doing only around 1-7 crush damage to everyone. I haven't determined exactly which negative status affliction leads to it since it doesn't always happen.

I have to keep respecing my character from scratch to fix this bug when I see it happening. It seems to happen at all levels from level 1 at the start of the game up to level 16.

Also, the super fast running animation bug on my wolf companion seems to happen much less in v3.9.3.88783 but I've still seen it happen sometimes in combat: for instance after triggering the hobbled trap in galawain's maw by the levered door my wolf starts moving his legs extremely fast while barely moving an inch. It's so funny to watch that I'm starting to hope it doesn't get fixed.

It also happens to some other enemies that I hobble through my wounding shot such as the swamp lurkers (and maybe forest lurkers?) in Northweald. To be specific, their movement animations are sped up while they actually move slower which causes extreme skating like those cartoons where someone in shoes runs in place on ice.