Guild Wars 2

I have a headset plugged into my computer. I have my game soun go to the speakers though, and only use the headset for teamspeak.

But at the end of my living story, when the bald guy shoots an arrow, the sound came out of my headset. After he shot the arrow, it came back out of my speakers.

I just finally did the end of the last living story. The problem still exists. Sometimes sounds go to the device selected in the GW2 menu as the sound output, and sometimes it goes somewhere else.