I am running Manjaro stable, AMD Radeon 580x with the video-linux driver.
I recently applied some updates and started having this issue, before it would remember the settings I made in Settings > Display.
I switch from kernel 5.0.15-1 to 5.1.1-2 with no change.
I also tried setting /home/HOME/.config/xfce4/xfconf/xfce-perchannel-xml/displays.xml to read only, but that did not work.
Any ideas on how to fix issue? I would like to get to the root of the issue, rather than apply work arounds if possible.