Crossfade Disabled When Using Airplay?

I noticed this evening that my songs weren't cross fading. I am streaming my music through airplay to my Denon and to a Homepod. When I play the music through the computer speakers or through the audio plug, crossfade works. I tried just to the Denon - no crossfade. Just to the Homepod - no crossfade.

Crossfade does work with my Airpods Pro.

So, crossfade absolutely does not work via Airplay.

Did this recently break? Or has it always been this way and I just haven't noticed?