Hi gdandrija,
I would rather not disclose the site if that is ok? I think the issue is with the lightbox element. Although lightbox is hidden with aria tags it fails validation.
1. gallery lightbox buttons are ’empty’ or have no value text.
2. lightbox/gallery navigation button images (svg) have no image alt text
The outcome of this is that on a page with three galleries the page shows 12 accessibility errors on validation.
I realise that the entire gallery lightbox is hidden with aria but is that really needed. Could the plugin not use an accessible lightbox rather than hide it?
Would love to hear your feedback.
Kind Regards
Paul