an update:
so i wanted to see what’s the origin of that quest.
it seems there’s a pre-requirement which is to find this Random Quest Item (starting a quest) drop.
You find the quest item killing worgens in Dustwood.
you get this Book: https://classic.wowhead.com/quest=337/an-old-history-book#comments
you then return the book to stormwind Keep’s npc and he will give you the follow up quest which is called ‘Southshore’.
not sure if i missed it somehow or not, but i can’t recall a step where i was suppose to do that, or this was mentioned anywhere during the previous guides such as the ‘Ashenvale (29-30)’ in-game quest guide.
hope this info helps other who perhaps encountered the same until fixed by Dugi.