The bug is fairly minor, but does interrupt workflow:
I have several audio devices attached to my workstation, which I switch between throughout the day depending on my activity.

On the main monitor, switching is easily done as intended in Windows 10
On the second monitor, however, the same menu is shifted down - it aligns itself with the menu that spawned it, rather than with the top of the taskbar as it should. This makes it impossible to select any audio device as the options populate off-screen.

Screenshots attached of the behaviour. I am using Windows 10. Please note that I have a few taskbar tweaks applied to make it feel more like windows 7,but disabling them has no impact on the audio selection bug described above.

Warm regards,
Rory