what is strange is that it worked on 1.7 but quit working once I upgraded to 1.8 I can play to all of my homepods without issue and no mac invovled. All of my Homepods are dedicatde end points and act as such. So, it supports the correct airplay it just changed how it handled the IP addresses of the units.whenin a stereo pair.
This is expected behavior; when Roon 1.8 was released, Apple also released the audioOS 15 update for HomePod devices. We received reports of issues similar to the one you described in your post.
While we don’t have a timeline on when a solution will be provided, we recommend continuing on with this workaround. I’m sorry that this does not allow for stereo grouping, which is ultimately what you are wanting to complete.