I still haven’t found a solution to this issue as well. Still waiting and hoping.
This did not resolve the issue unfortunately. Any way I can downgrade my wordpress to the previous version?
How can I downgrade to 1.8.2? Not sure how to do that.
I am having the same problem. Since the upgrade when you click on a thumbnail it just shows the bigger picture in a new page. I then have to click the back button to view the gallery again. Before when I clicked the thumbnails it used to pop open a gallery to view.
