I can confirm, this is also bugged for Blacksmithing (e.g. crafting Shadowsteel Breastplate with either Crafter's Mark III or Crafter's Mark of the Chained Isle).
https://wowhead.com/spell=343677/cra ...
WoW Freakz link: https://www.wow-freakz.com/spells.php?spell=351750&name=party-favors
Character name: Tanomil
Bug description: Theotar is not offering the tea (https://www.wow-freakz.com/spells. ...
Character Name: Tanomil
Item Name & ID: Mana diving stone; https://www.wowhead.com/item=141652/mana-divining-stone
Armory Link:
Details: (optional) I accidentaly deleted it and now Arcanist Tha ...