@jfrancais, @thetinker86
Try logging out of the ms/xbox account in the settings menu.
When my kids log in to ms account, all local lan servers disappear from "friends" tab. When not logged in, they can see servers on local lan, both the unraid server and the games each other are hosting..
If you cannot log out of the account, just add the server ip to the "servers" tab and it should show up in that tab. However, you may need to start adding xuids on the server permissions to allow them access.