Side note, Niri is a fantastic WM. When I saw the Phoronix article on HN talking about the addition of overview mode and more, I finally took the plunge and spent an afternoon converting over from Sway.¹ Anecdotally, I've seen less hangups on Niri around fullscreen games and floating windows, perhaps thanks to X11 running in xwayland-satellite.
1: the hardest part was finding a bar that supported i3status-rs; not a fan of GTK bars that eat up CPU. I settled on i3bar-river.
I wish more Wayland compositors took this option, seems like a cleaner method of keeping X compatibility and not allowing Xwayland to bring down the entire compositor.
I've been so happy with Niri after many many years bouncing around other WMs. It addresses the main issues I've had with other tiling window managers and has been such a joy to use.
The scrollable aspect just feels so natural and intuitive to me.
Steam won't launch for me in xwayland-satellite here... I just assumed steam+wayland = broken. I have a kind of weird setup using sway with xwayland disabled and running xwayland-satellite though.
Try running xwayland-satellite in another WM like Niri and see if it works there – for example, Gamescope didn’t work well on Sway, crashing as soon as Steam tried to spawn another window, but it’s working fine in Niri.
1: the hardest part was finding a bar that supported i3status-rs; not a fan of GTK bars that eat up CPU. I settled on i3bar-river.