Image gallery format changed?

Hi,

in one of the latest updates, it seems that the formatting of the image gallery has changed. The consequence of that is that only the first image is seen as image by various plugins, such as WPML and WPAllExport for all newly added properties.

For existing properties, it makes that the first (featured) image is listed twice in the xml file.

WPML support told me:
I ran several tests and different combinations of the configuration, however the images still don\’t appear in the Translation Editor.
This is due to the fact that these images are handled in a different way so I recommend you to contact the Estatik\’s support service and ask them about this behavior
You can use the featured image as a reference of the behavior you expect from the images in the gallery

WPAllExport support told me:
I’m seeing that the gallery images are stored in the “es_property_gallery” custom field, as a serialized list of image IDs:
a:3:{i:0;s:3:”679″;i:1;s:3:”677″;i:2;s:3:”678″;}

What has changed, and how to fix all these issues?

The page I need help with: [log in to see the link]