Sorry to hear you are having issues.
Deskscapes works fine on a single monitor running 1809.
The Multi Monitor with asst. resolutions is a know issue.
Yes 1809 .107 was out a few days ago for a lot of people but
also has updated itself since then. I would think MS has to
settle on a final version before a fix can be adapted .
When a fix is available it will be posted for all .
No ETA at this time though .
Stardock Community Assistant