Featured Image

Hi,
since today I have a strange problem with the featured image plugin when creating a new (or changing an existing article) article.

Usually the right column has:
1st block: Publish
2nd block: Featured image with the SET Button
3rd block: Publish date

What i see now between the 2nd and 3d block is a list of my gallery categories:

Current featured image
Architektur (0)
Bauten (60)
Burgen (36)
Industrie (22)
Skulpturen (29)
....
After that:

Current featured image
Datum

At the end of the list I see the fields where I can set the published date.

What makes me wonder:
In the last days I have created a bunch of new articles without problems.
Since today I am not able to use the plugin.

Any ideas?

PHPVersion is 7.1.8
Zenphoto: 1.4.14