[Logitech USB Headset] Mute mic button does nothing

[Alex Hausen]

Pressing the headset button for muting the microphone does nothing (confirmed by xev).
The volume control buttons from the headset work fine.
Muting the mic from the settings panel or using the keyboard shortcut work fine.
USB Headset model Logitech H390.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: hausen 1143 F.... pulseaudio
 /dev/snd/pcmC1D0c: hausen 1143 F...m pulseaudio
 /dev/snd/pcmC1D0p: hausen 1143 F...m pulseaudio
 /dev/snd/controlC0: hausen 1143 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul 10 22:12:36 2020
InstallationDate: Installed on 2020-06-27 (13 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaRecordingTest: ALSA recording test through plughw:Headset successful
Symptom_Card: Headset H390 - Logitech USB Headset
Symptom_PulseAudioRecordingTest: PulseAudio recording test through plughw:Headset successful
Symptom_Type: None of the above
Title: [USB-Audio - Logitech USB Headset, recording] Recording problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/25/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: W110ER
dmi.board.vendor: CLEVO CO.
dmi.board.version: N/A
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 9
dmi.chassis.vendor: CLEVO CO.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd05/25/2012:svnCLEVOCO.:pnW110ER:pvrN/A:rvnCLEVOCO.:rnW110ER:rvrN/A:cvnCLEVOCO.:ct9:cvrN/A:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: W110ER
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: N/A
dmi.sys.vendor: CLEVO CO.