Initially there is no exclemation mark on the map for this quest, but when I accept the quest and then cancel it, the exclemation mark shows up. After a /reload it is gone again.

Link: https://classic.wowhead.com/quest=225/the-weathered-grave

This showed up on my Walkthrough of Duskwood, so this is in Good order, its just the Tracking bug that desyncs or stops updating after some time but starts working again at random or after a /reload.

Closing this for now

Always tried to /reload before reporting anything :)

This was likely fixed during one of the updates after you posted, lot of changes to the logic. If it happens again ill reopen but the quest data looks correct