Problem after upgrade from 1.51 to 1.52

Do you have a separate lightbox plugin? I see code inserted into the markup that is not from Photonic. Can you try disabling that plugin?

I am not sure, but it does seem like that the other plugin too was updated recently, though that might not be the culprit.

There is code in the WP-JQuery-Lightbox plugin that is inserting a “rel” into links, with double-quotes, and that is messing with the structure of what Photonic publishes. Basically the code of the lightbox plugin does this:

function jqlb_do_regexp($content, $id){
	$id = esc_attr($id);
	$content = preg_replace('/\s+rel="attachment wp-att-[0-9]+"/i', '', $content); //remove WP 4.4 garbage
	$pattern = "/(<a(?![^>]*?rel=['\"]lightbox.*)[^>]*?href=['\"][^'\"]+?\.(?:bmp|gif|jpg|jpeg|png)(\?\S{0,}){0,1}['\"][^\>]*)>/i";
	$replacement = '$1 rel="lightbox['.$id.']">';
	return preg_replace($pattern, $replacement, $content);
}

One option for you to consider is, go to Photonic → Settings → Flickr Options → Flickr Photos – “In-page” View, and check the option for “Disable lightbox linking”. Let me know if that works.

While I do understand the problem, please try to understand that your current lightbox plugin will cause issues whenever you have another plugin that does lightboxes which handle links in the title.

Regarding why this was working fine earlier, there was a different issue in Photonic that was causing multiple galleries to behave like they were the same gallery.

The checkbox I mentioned to you in my previous post works fine for me, even with WP JQuery Lightbox enabled. What are the settings you have for WP JQuery Lightbox?

Do you have an option to use a different lightbox plugin? I can help you downgrade to a previous version of Photonic (you can get older versions from https://wordpress.org/plugins/photonic/developers/), but short of providing an option to use Photonic’s lightbox across the board, I see no other alternative within Photonic itself.

OK – try as I might, I am always able to see the thumbnails when I select the “Disable popup linking” checkbox.

At this point I would suggest trying a different lightbox plugin for the rest of your images. In the next release I will offer a capability to handle non-Photonic images through Photonic’s lightbox; that should take away the need for a separate lightbox plugin.