SUMMARY
I am using the latest build version 8.6.0-20250213T140204-Qt6. 
while rebuilding the training data, it also scanning and detecting the face. but before, it does not recognize the face in my albums. Instead, it scans all the photos in my album, read the people and faces from the metadata, use them to train. 
so that next time i upload a person face, it detects and recognize the faces accurately.  
But now while I run the Rebuild all training data, My number of faces in the unconfirmed section is increasing. 
I believe that it is detecting faces and recognizing faces simultaneously whild rebuilding the training data. 

STEPS TO REPRODUCE
1. in menu bar go to "Tools"
2. select "Maintenance" 
3. Maintenance dialog box appear.
4. In the detect and recognize Face section, click on the check box "Rebuild all training data"


OBSERVED RESULT
recognizing faces from the selected albums in the common option section  

EXPECTED RESULT
Rebuild the training data only 
(that is it should read all my photos and train the face/people data, so that it can recognize the faces next time) 


SOFTWARE/OS VERSIONS
Windows: 10 22H2
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 6.8.1

ADDITIONAL INFORMATION