Something very bizarre just happened. I was adding a yellow label to a select number of photos in a project when after about 20 were labeled I realized the photos were disappearing from the project. I did a search for all photos with a yellow label and they didn't appear there either. In the Library Inspector column the Project says it has 811 photos, just as it was before I began labeling, but at the bottom of the main window it says only 792 photos are displayed. So, I know they're there somewhere, but can't find them. I can't even find a way to reveal hidden photos, though I have no idea why a labeled photo would disappear in the first place? I had been adding this label for awhile in several projects and only in this last project did this happen. Bizarre!

Anybody have a clue? TIA!