Faces are sometimes recognized multiple times

I’m using Digikam 7.9.0 and I’m currently in the process of making the faces in my image collection recognizable. When I look at the albums with the recognized faces,I notice something: Some images have 2 face markers on top of each other, meaning that the faces have been recognized multiple times. This means that the face is displayed twice in the album. In the context menu of the image, sometimes 2 tags with the person’s name are displayed, but sometimes only one. Simplest solution: simply delete all tags of the affected files and run the face recognition again. This is very time-consuming for a picture collection with 120000 pictures.
Is there a possibility to search all pictures where the same person was marked more than 1x per picture ?