I have a problem with a Kubuntu user. I have two users and the problem only occurs for the one.
When I log in to the user, the desktop wallpaper always displays in the top left corner at about 25% size. It is scaled down with the correct aspect ratio. If I change the image, the problem persists. It happens if the image is the native res of the monitor, or if it isn't.
To fix it I must go into display configuration and toggle the resolution to a different size and then back again.
Once I log out and log back in again, the problem is back.
Thanks for any help! :)