Sunshine doesn't mute the remote host speaker even when "Mute host PC speakers while streaming" is selected in Moonlight

[kgggggb]

NVIDIA Shield doesn't have this problem in the same Moonlight client.

Platform: AMD Ryzen 7 Zen 4 7840H w/ Radeon(TM) 780M Graphics(No dedicated graphics card)
Version: Sunshine v0.21.0
Operating System: Windows 11 23H2 x64

The volume settings on remote host will affected the final volume in Moonlight too, I can't just tune down or mute the remote host and pretend it works.

I suspect that may because Sunshine didn't install a virtual audio driver when connected with remote client so it just capture whatever audio output device it has on the host, but shouldn't it be able to capture audio when system is muted or volume tuned down too? That's how OBS would works.

Is there an option to ignore the host system volume?