Harvey Antoine Solus does not develop Budgie desktop it is its own project so thats a question for them. But from memory that functionality was planned for Budgie 11 which would have wayland support.
Staudey Harvey But from memory that functionality was planned for Budgie 11 which would have wayland support. It would seem that way: Going into Budgie 11, we will have a similar solution and paired with multiple panels across multiple monitors (a requirement for Budgie 11); you will even be able to have multiple tray applet instances enabled, which was not otherwise possible with the XEmbed-based solutions. from: https://buddiesofbudgie.org/blog/state-of-the-budgie-2023