Very odd, another Windows 10 quirk I am afraid, it seems to have a fair few for various programs. We have not changed anything in WOFF related to exiting a mission, or playing videos/sound for a very long time.

Regards,

Polovski,
OBD Software, developers of immersive flight sims;
Wings Over Flanders Fields and Wings Over The Reich
http://www.overflandersfields.com
http://www.wingsoverthereich.com