HomeKit iOS 15.4

Every since upgrading to iOS 15.4, HomeKit has ruined my HomePod experience. If I create a new scene with audio, the scene won’t play the selected audio, only the most recently played audio.

Creating a scene that turns of everything except a select homepod is impossible, since now they will either all play audio, or all pause audio. Any fixes? I’ve already tried hard resets of all devises and Wi-Fi. If tried to reach Apple support via callback, but have had nobody call me yet…