Crash on next startup when default display settings have been changed in previous xfwl4 session

It can also crash in the session where display settings are changed, but I can't reproduce it reliably.

I can save default display settings in xfconf without changing them, but any change saved makes xfwl4 crash on next startup.

Default display settings (doesn't crash): displays-channel-default

Changed display settings (does crash): displays-channel-changed

Working logs: xfwl4-working.log

Crashing logs: xfwl4-crashing.log