Closing/colapsing an image stack causes another stack to open/expand
I'm using Photoshop Elements 15 Organizer. I have a folder with a large number of image stacks. Each stack is an exposure bracket sequence. If I open one of the stacks to view a thumbnail of all the images in the stack, they are displayed as they should be. When I click on the little close/colapse icon on the last image, the stack colapses, but another stack is opened/expanded. The stack that is opened is usually, but not always, the stack two locations further along in the stack sequence.
I've also noticed that if I've double clicked on the thumbnail for an image in an opened stack it will display full screen as I'd expect. But then if I scroll to last image of the stack and click on the close/colapse icon, it will close/colapse the full screen stack, but when I go back to the thumbnail view the stack is still expanded.
What's going on?
