Hi there,
I've similar behaviour as tir reported here: http://nch.invisionzone.com/topic/26807-cant-exit-sounttap/?tab=comments#comment-68681
It sometimes happens, not every time. If it happens, I can't get the program closed normally. It seems to "register" click, but will not be closed. If I try with Task Manager, I can pick the process, click on "Task beenden" (OS German version), but it won't close either. The only solution is Windows restart. OS: Windows 10, HP laptop with I7:
https://drive.google.com/file/d/1cf5S7vCSR9h4DPKhUJ29NuxS1qc5ashN/view?usp=sharing
Regards,
flocken