Hi Alin,
I am one of the developers who works on the site. Besides the plugins being different versions, 13.0 on Dev vs 11.6 on Prod and WordPress versions being different between environments. I don’t see any plugins impacting the gallery functionality.
Other notable plugins that we are using are:
- Classic Editor
- Gutenberg
- Uncode
Jetpack is running in Offline mode on Dev site and we have “Display images in a full-screen carousel gallery” option enabled under Writing for Jetpack settings.
Please let me know if you need additional information.
Thanks