There is a console error happening in the editor side in:

https://release.k8s.p4.greenpeace.org/greece/wp-admin/post.php?post=3952&action=edit

Notes:

Looks like it's related to this line:

https://github.com/greenpeace/planet4-plugin-gutenberg-blocks/blob/develop/assets/src/blocks/Gallery/GalleryBlock.js#L123
 
focal_points_json[img_id] --> seems to be undefined.