Tv turn on but changes sound output twice
My LG Oled B7 is connected to my Yamaha AVR via HDMI ARC. When I turn on the tv via homebrige it does change the sound output twice. How can I stop this behaviour? Sound output should always be the external speaker.

4/22/2020, 3:52:07 PM] [Televisore] webOS - connected to TV
[4/22/2020, 3:52:07 PM] [Televisore] webOS - app launched, current appId: com.webos.app.livetv
[4/22/2020, 3:52:07 PM] [Televisore] webOS - audio status changed
[4/22/2020, 3:52:07 PM] [Televisore] webOS - current volume: 0
[4/22/2020, 3:52:07 PM] [Televisore] webOS - muted: No
[4/22/2020, 3:52:07 PM] [Televisore] webOS - sound output changed
[4/22/2020, 3:52:07 PM] [Televisore] webOS - current sound output: external_speaker
[4/22/2020, 3:52:07 PM] [Televisore] webOS - current channel status changed
[4/22/2020, 3:52:07 PM] [Televisore] webOS - current channel: 507, LA7 HD
[4/22/2020, 3:52:12 PM] [Televisore] webOS - sound output changed
[4/22/2020, 3:52:12 PM] [Televisore] webOS - current sound output: tv_speaker
[4/22/2020, 3:52:14 PM] [Televisore] webOS - sound output changed
[4/22/2020, 3:52:14 PM] [Televisore] webOS - current sound output: external_speaker

