I’m having this exact same problem. I’ve also noticed that the blank thumbnails also show no information about the image when clicked on. It’s like the file doesn’t exist, but I can see it in normal Media Library view.
Ok sorry for the run-around but this seems to now be happening on all browsers.
None of the menus are showing now.
Update:
Very strang. It appears this is only happening in chrome normal browser. Incognito and other browsers appear to be all ok, so I’m assuming it’s only my specific chrome browser that’s the issue and not the plug-in it’self.
Would be interested to know if anyone else has had this happen to them before though as I’ve turned off all extensions and it doesn’t seem to matter, yet chrome incognito works fine. Weird.
I just worked this out….Use the shortcodes.
So create a post with the categories and breadcrumbs you want and paste the gallery shortcode into it.