I am having the same issue. Started this morning. Link to my own report below. This seems to be the beginning of a fairly large issue. Please fix soon.
Starting this morning I have had to do a /reload after completing a quest, advancing any steps or starting a new quest/chain. The quest itself seems to be updating as I can complete the steps but I don’t get update map markers or quest log text/entry until I perform a /reload. I played all 9/14/2024 without this issue but so far once I started playing 09/15/2024 I can’t seem to fix it.
I have tried a PC restart, game restart, clearing blizzard cache, disabling all add-ons, reinstalling WoW to a…