Finding cropped images in Lightroom
Would either of these ideas work as a possible work-around?:
1. Go to your Smart Collection and select all the cropped photos. Add a specific color lable. Then whenever you are in a folder, you can quickly identify which images are cropped. You could then further refine it by either: Sort by> Color Lable, or filter by Color Lable.
2. Go to your Smart Collection, select all cropped photos and add the Keyword 'Cropped'. Then, in any folder you could quickly filter by: Text = Keyword> Contains> Cropped.