problems except functionality that's missing at all (like window positioning for which a few days ago the xx-zones protocol got merged).
Wait, what?? Wayland has been out for years and only now they get "window positioning" functionality?

I honestly don't know what's going on with Linux these days. Everything must constantly be replaced - not improved - replaced! Then everybody needs to migrate. Wait for bugs to be fixed, while the forced-software-onto-us-is-crap. By the time it's stable, there is something new that MUST replace it.
I work a lot with sound and sound devices. Linux is absolute rubbish with it's low level drivers, multiple sound servers, terrible latency etc.
FreeBSD simply improved OSS (open sound system) and it just works [for years now]! Per-application volume, software mixing, virtual devices - the lot! None of this linux crap.
I'll stick to X11 and the x fork if I must. I tried Wayland multiple times. So many of my apps don't behave correctly, it's crashes way more often. Nah, not for me.