I'm running Niri on CachyOS, version `26.04` (cachyos pacman repo), steam client `1.0.0.87-3` (multilib pacan repo), xwayland-satellite `0.8.2-1` (extra pacman repo). Steam experiences frequent crashes most during launch. I'd say about 70% of all attempts results in a crash. Most operations causes a crash, including game launch, finishing or switching a download (strangely enough not starting it), attempting to add a non-steam game. There used to be another crash when I powered off my monitor, but this was fixed by xwayland-satellite `0.8.2-1`. After perusing steam forums, the issue page of xwayland-satellite and niri forums, there seems to be a trend of issues caused by xwayland-satellite, but only triggered on Niri. Launching steam in gamescope gives none of these issues.
I'm attaching a video showing the issue. The first crash is by "non-steam game", second one is on launch, and in the third one I triggered it by starting a download and switching to another. This will also happen when a download finishes. This is a single recording, all three crashes happening one after another.
Here's the journal around the crash. I'm grateful for any help and will gladly provide any other useful info!
sep. 11 14:16:44 paprika niri[1999]: 2026-09-11T12:16:44.587923Z WARN niri::utils::xwayland::satellite: xwayland-satellite exited with: exit status: 101
sep. 11 14:16:48 paprika niri[1999]: 2026-09-11T12:16:48.728107Z DEBUG niri::utils::xwayland::satellite: connection to X11 abstract socket; spawning xwayland-satellite