Real folder with 2 files, Lr shows duplicates
Ok so, this is not the first time it happens, and its been like this for more than a year so it's not an issue of the last version, it happens on this PC and also on my 2 PCs at home. The folder in Pc with, in this case, 2 files, Lightroom shows 6 files, and it shows 6 files because I ask for synchronized folder and each time I do that Lr adds another thumbnail of the file.
I already purge the cache, restart and the result is the same
Lightroom Interface

Folder on PC

Anyone with this problem??? It's not happening all the time but from time to time Lr does these