Enhance dialogue „more“ missing

[NME42]

I have an Apple TV 4K (2021) with HomePods 1st gen.
Read that there should be three options for dialogue enhancement: off/on/more. My Apple TV only shows off/on. tvOS 18.1 installed.

Not found any preconditions in the manual.

Can you help?

 

[Phasitron]

I noticed today that “More” is missing from both of my current generation Apple TV 4K but it’s still available as an option on my previous gen 4K, FWIW.

 

[NME42]

What is the audio output on your previous gen 4K?

 

[Phasitron]

I’ve got HomePod Minis on the previous gen (and some version of HomePods on all three). Audio output is through them.

 

[NME42]

Switched to TV output and back to HomePods and there you go. Now I have the option to enhance dialogues „more“.
Seems to be a bug in tvOS.