Airplay does not work anymore on Tahoe with WLAN and Ethernet both active

I'm using a Mac Mini M1. It has active Ethernet and WLAN connections. Ethernet has priority over WLAN.

Since updating macOS to Tahoe 26.2 (I started with 26.2) Airplay does not work anymore in case Ethernet and WLAN are both active. I can check my HomePod as Airplay target, but it does not play anything. After some seconds the Airplay Icon in macOS Music shows an exclamation mark and the HomePod as Airplay target was unchecked.

When I disconnect the Ethernet cable from my Mac Mini, Airplay works fine and I can stream music to my HomePod.

This seems to be an error in Tahoe as it was working fine before updating my Mac Mini to Tahoe.

I need to get this behavior fixed as for the Mac Mini the Ethernet is >10 times faster than my WLAN.

Thanks and regards,

Holger