1."An Unusual Tome" quest (https://www.wowhead.com/quest=32295/an-unusual-tome)
2.This "An Unusual Tome" quest cannot be completed due to the fact that you cannot communicate with your demons that you've summoned.
3. For every warlock I believe, this quest is not able to be done for that reason, so please let the quest be proceedable.
4. Jan 15, 2022, Battle for Azeroth.
5. Jan 12, 2022 for me