Nostalrius Begins - Quality wow vanilla realm (1.12)

I click on Gloom Weed, but does not drop anything.

1. Relog: Try logging out, exiting the game, reopening the game, and logging back in.
2. Delete WDB folder: Clear your game's cache.
3. Abandon and re-obtain the quest.

Try these three things in order to see if one of them fixes it. I've had quests appear bugged where an object I was suppose to interact with either wasn't dropping or scripting the NPCs correctly. Relogging fixes it most of the time for me.