Thumbnails in full size

Hi all,
After the last update I’ve got the following problem:

If I create a new gallery and include it in a page, the images have full size in the thumbnais. (example)

A gallary created inside an page works fine like this.

In blogs both – included and created galleries works fine.

Crop images is diabled in any case.

Any idea why this happens?

thx and regards
Manfred

https://wordpress.org/plugins/envira-gallery-lite/