A hotfix was put out to live servers this afternoon:

*** Hotfix ***

• The new rare global drops have been disabled in Heroic Adventures and Missions for the time being.
• Karl Kranigan is a bit more sturdy now. It will no longer be possible to accidentally kill him while working on the 11th anniversary task "Stealing My Life Back."

This means the recently added Rain of Fear raid-equivalent random rare drops recently added to Call of the Forsaken content will no longer drop in instanced zones for the time being. Most likely, this is in response to reports of certain NPCs in heroic adventures dropping the items at a much higher rate than intended.