Desktop wallpaper keeps changing back to "Island at night".
Suddenly my Catalina version 10.15.3 (19D76) (MacBook Pro Retina, 15 inch, mid 2015) decides to show this picture when I log in during the evening. I tried to change to my own picture which was fine on one log in, but the next time it was back to this "island at night" again. This issue started two days ago. Anyone out there experienced the same thing?
Look, it thinks it is doing the right thing by showing my own chosen wallpaper (a Santorini image):