Ill post a short answer here to highlight something Misutoraru mentioned. So anytime you have an issue with the map not showing your quests thats either because the quest isnt on your quest tracker or you arent in the right area. Your quest tracker has space for 5 quests, and is typically auto-populated by the most recent 5 you picked up. If you want to manually switch which quests are being tracked(say, to put the objectives for some quest you cant find on your map) then open your quest journal and click the yellow box next to the quest and it will force its way into the 5 being tracked(theres also an option to force a quest not to track, in case you dont want to see objectives or maybe save it for later). In addition, in your quest journal each quest has a map button attached to it. Pressing that will give you a general idea of where you need to be(especially useful if youre no where near an objective - if youre more then 1 zone away the tracker wont have any marks on the current zone map for you to follow).