Gallery-Block broken in Cryout-Themes: Only 1 image per row

Hello,

the display of the Gutenberg-Gallery is broken in Cryout-Themes.

Example: Roseta version 1.3.0

The images are only displayed with one image per row, so all the images in the gallery are displayed one below the other (although the images are small enough to show 5 images per row).

I already did some tests:
I deactivated ALL plugins in a cloned staging enviroment, but the issue persists (with no plugin, and Roseta 1.3 active).
After that, I downgraded the theme to Roseta 1.2.2, and that FIXED the issue.
=> So the issue was “introduced” with the update from Roseta 1.2.2 to 1.3.

Screenshot (web-view and editor-view):
https://www.screenpresso.com/=fglRd
https://www.screenpresso.com/=TKevg

Website: stoebener-essen.de/last-minute-geschenke-fuer-weihnachten