Blizzard will be applying a hotfix to Diablo 3 to address an “issue” with Bone Ringer which involves the damage bonus of Command Skeletons.
Now it’s been disabled, there is an explanation on why this has been disabled in this thread.
We recently investigated reports of an issue involving Bone Ringer. As a result, we will be temporarily disabling the item’s Legendary power until a hotfix can be prepared to correct the issue. We will update this thread once the hotfix is live.
Special thanks to the players who reported this, and to everyone for their patience as we work on a fix.