SUMMARY
Xwayland has crashed notification upon logging into Plasma, but Xwayland apps still work fine

STEPS TO REPRODUCE
1. Update to latest kde-unstable on Arch
2. Watch as the notification appears
3. Profit

OBSERVED RESULT
Xwayland "crashes"

EXPECTED RESULT
No notification

SOFTWARE/OS VERSIONS
Linux: 6.12.9
KDE Plasma Version: 6.2.90
KDE Frameworks Version: 6.10.0
Qt Version: 6.9.0

ADDITIONAL INFORMATION
Output of journalctl -S "10 minutes ago" | grep kwin
Jan 13 00:21:43 toilet kwin_wayland[915]: <Unknown File>:97: TypeError: Cannot read property 'translucencyWindowTypeAnimation' of undefined
Jan 13 00:24:28 toilet kwin_wayland[915]: kwin_core: Failed to open /dev/input/event11 device (Unknown object '/org/freedesktop/login1/session/_32'.)
Jan 13 00:24:28 toilet kwin_wayland[915]: kwin_core: Failed to open /dev/input/event11 device (Unknown object '/org/freedesktop/login1/session/_32'.)
Jan 13 00:24:28 toilet kwin_wayland[915]: kwin_core: Failed to open /dev/input/event11 device (Unknown object '/org/freedesktop/login1/session/_32'.)
Jan 13 00:24:28 toilet kwin_wayland[915]: kwin_core: Failed to open /dev/input/event11 device (Unknown object '/org/freedesktop/login1/session/_32'.)
Jan 13 00:24:28 toilet kwin_wayland[915]: kwin_core: Failed to open /dev/input/event11 device (Unknown object '/org/freedesktop/login1/session/_32'.)
Jan 13 00:24:28 toilet kwin_wayland[915]: kwin_core: Failed to open /dev/input/event11 device (Unknown object '/org/freedesktop/login1/session/_32'.)
Jan 13 00:24:28 toilet systemd[816]: plasma-kwin_wayland.service: Consumed 4min 30.349s CPU time, 600.1M memory peak.
Jan 13 00:25:03 toilet kwin_wayland[916]: No backend specified, automatically choosing drm
Jan 13 00:25:06 toilet kwin_wayland_wrapper[987]: (EE)
Jan 13 00:25:06 toilet kwin_wayland_wrapper[987]: Fatal server error:
Jan 13 00:25:06 toilet kwin_wayland_wrapper[987]: (EE) Cannot write display number to fd 76
Jan 13 00:25:06 toilet kwin_wayland_wrapper[987]: (EE)
Jan 13 00:25:06 toilet kwin_wayland_wrapper[1035]: The XKEYBOARD keymap compiler (xkbcomp) reports:
Jan 13 00:25:06 toilet kwin_wayland_wrapper[1035]: > Warning:          Unsupported maximum keycode 708, clipping.
Jan 13 00:25:06 toilet kwin_wayland_wrapper[1035]: >                   X11 cannot support keycodes above 255.
Jan 13 00:25:06 toilet kwin_wayland_wrapper[1035]: > Warning:          Could not resolve keysym XF86KbdInputAssistPrevgrou
Jan 13 00:25:06 toilet kwin_wayland_wrapper[1035]: > Warning:          Could not resolve keysym XF86KbdInputAssistNextgrou
Jan 13 00:25:06 toilet kwin_wayland_wrapper[1035]: Errors from xkbcomp are not fatal to the X server
Jan 13 00:26:08 toilet drkonqi-coredump-processor[1179]: "/usr/bin/kwin_x11" 1682 "/var/lib/systemd/coredump/core.kwin_x11.1000.7cce77694e64434e90bf59d8a7aab88e.1682.1736534537000000.zst"
Jan 13 00:26:08 toilet drkonqi-coredump-processor[1179]: "/usr/bin/kwin_x11" 1827 "/var/lib/systemd/coredump/core.kwin_x11.1000.7cce77694e64434e90bf59d8a7aab88e.1827.1736534538000000.zst"
Jan 13 00:26:08 toilet drkonqi-coredump-processor[1179]: "/usr/bin/kwin_x11" 1960 "/var/lib/systemd/coredump/core.kwin_x11.1000.7cce77694e64434e90bf59d8a7aab88e.1960.1736534540000000.zst"
Jan 13 00:26:08 toilet drkonqi-coredump-processor[1179]: "/usr/bin/kwin_x11" 2087 "/var/lib/systemd/coredump/core.kwin_x11.1000.7cce77694e64434e90bf59d8a7aab88e.2087.1736534541000000.zst"
Jan 13 00:26:08 toilet drkonqi-coredump-processor[1179]: "/usr/bin/kwin_x11" 2138 "/var/lib/systemd/coredump/core.kwin_x11.1000.7cce77694e64434e90bf59d8a7aab88e.2138.1736534541000000.zst"