Xfce loses theme settings

Today I started my xfce desktop and it looks like …“different”. No theme loaded, default icons, no background. I tried to change theme from Xfce Settings but nothing, it doesn’t work.

My .session-errors reveals a

After a bit o googling it seems to be an aged bug of xfce when used on multiple monitor configuration.

The solution, or better, the workaround is to delete the file:

Now you can log out and log in again in your themed Xfce :-)