Hello,
I'm new here.
There is a problem with the kde background I've got.
I tried to change the background to "Image of the day" -> "Wikimedia" in the "Desktop Settings".
But the dektop hasn't changed.
When I modified the option from "Wikimedia" to "Astronomie" the desktop changed as well.

What's the problem.
Is it a bug??

Thank you for answers.

I can confirm this and would suggest posting a bug on bugs.kde.org, seems that only some of the options for "image of the day" currently work.

Found a similar bug for the Flickr option with the suggestion it was caused by a change to their api https://bugs.kde.org/show_bug.cgi?id=337624

Thank you very much!