This quest is given by the Port Authority Captain Waqid. Not sure if the 2-15 patch fixed this.
Quest : Quelling the Riot
Quest Giver - Captain Waqid
Zone: Khal - Port Authority HQ.
You are set to kill 3 kind of mobs, including the riot inciter.
When you finish the quest you go back to Captain Waqid at the port authority HQ in Khal, but he wont deliver you the reward.
The work around is simple. When you reach the Bay Outpost after the starter quests, you get a quest to talk to a NPC. This NPC is located outside Khall, near the diplomacy trainer and crafting trainer. [SW of khal, near a city exit]
talk to this NPC. she will act, like she is Captain Waqid and will give you the reward.
Sorry the vague decription but i cant remember her name. If someone remembers please add it to the post.
This bug was submitted via the /bug command ingame.