Detection problem of similar images (XnView v1.99.6)

[Recherchiste]

Hello,

With the Version 1.99.6 of XnView, there seems to be a problem detecting similar images (80%) for a given case, is as follows:

- A folder containing several subfolders, each containing many images of JPG format
- For similar images, with identical names, finding themselves in these subfolders

=> XnView does not detect similar images with the same names in different subfolders => why????

Thanks for your help.
Sylvie

P.S.: It's a function that I use very often for several years.