Drag & Drop in Gallery not working

Hello !

I am using the Gallery widget on the website I am building in Elementor Pro and the drag and drop functionality to reorganize the images doesn’t seem to work anymore (it was working before).
All plugins and themes are updated, I am working on Chrome but already tried other browsers (Safari & Firefox). I also tried disabling my ad block plugin. My client also treid it on her computer and it is not working either.

Can you help me ?

Thanks !

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