Audio Bug with tvOS 26.1 adn UHF 1.79

I have a new and somewhat puzzling issue. And I actually don't know whether it's the UHF app or tvOS 26.1. Here is the scenario…

• If the Apple TV is connected to Wi-Fi, and I try to extend the audio beyond the default speakers to a HomePod mini, it is not able to connect. However, it's important to understand that this happens with every single Apple TV streaming app.
• If the Apple TV is connected to Ethernet, and I try to extend the audio from the default Apple TV speakers to a HomePod mini, it will then only play through the extended speaker. This time it's important to note that this only happens on the UHF app. All other streaming apps will play through the default speakers and the extended speaker.
• I tried this on several Apple TVs. All of them have tvOS 26.1. They also all have UHF 1.79.1 (229)

Thoughts?