- Auto-looting working half the time, if that, since 11.0.0.
- The “Umbrage for Umbriss” achievement still being required for the “Glory of the Cataclysm Hero” meta even though the 11.0.0 changes made it impossible to obtain. There was an opportunity to fix this with 11.0.5, but weirdly all they did was strip the points from Umbrage in the first PTR build and then nothing afterwards.
- Completing the criteria for the “Family Battler of Khaz Algar” prior to patch 11.0.5 will give your account the achievement but not its pet reward. According to the support article, CS can’t help you.
- Having the original time stamp for both old and current reputation achievements over-written randomly.
- For the story being an important aspect of the Warcraft franchise, it’s pretty embarrassing to push live broken quest cut-scenes that also break the audio for the entire game unless the player restarted the game client. (At least that was fixed fairly quickly, but it already soured the experience for those like me that had already done them.)
- A Hallowfall treasure that requires an item to unlock it, but looting said item renders the treasure unable to be interacted with.
And all that is just The Beta Bug War Within. There’s still existing bugs from older content, like being unable to fly out of Undercity on certain characters, or Gorepetal’s Gentle Grasp being non-functional since 9.0.2, and that same Shadowlands patch also removed the White Tuxedo Shirt from the Appearances tab.
Now certainly none of those I mentioned above has been game-breaking in the truest sense of the term (like how boomkins at one time would crash the game server), and vary in degree of priority, but I bring up all these examples to make a point – it’s the classic “death by a thousand cuts”. As much I’ve put up with bugs over the decades, there’s a limit and if it weren’t for the guild bank data loss with 11.0.2, it could very well have been the umpteenth stupid bug with this very glitched expansion.
Elune, I’m tired… 
Oh man, that has really not aged well. 