Game switches to incorrect audio device during and after cinematics

[Ipomoea Jalapa.6897]

My GW2 audio settings are set to one sound device (let's call it A). If I switch my default audio device in my Windows control panel to another one (let's call it B) while I'm playing GW2, then GW2 starts using device B as soon as a cinematic occurs. Then even after the cinematic is over, it keeps using device B for all game sounds, even though the audio settings still show that it's using device A.

There's a simple workaround that works for me at least: if I switch to another audio device and then switch back, then it resumes using device A. But it's a bug nevertheless, and despite the workaround, the few seconds of big loud awesome GW2 sounds reverberating throughout the house is enough to get me in trouble :).