@jackfriks Being that you’re already on supa, you could just self-host supa inside a docker container running on a hetzner VPS. You’ll already be familiar with the supa studio UI and you’ll have more fine grained control going forward (and cheaper hosting)
So essentially a same-backing-store composite without the z-ordering constraint of CAPortalLayer. Really curious whether this works across UIWindowScenes or just within a single scene’s layer tree…would confirm whether it’s the PiP/Stage Manager mechanism or something scoped more narrowly