That’s something pretty weird from the user point of view, and something hard to figure out from the SW design point of view.
I had 6152 albums in my library. I added 10 by copying and pasting files to a synced directory. That made a total of 6160. Up to this point, all seemed quite normal.
I added 2 new albums to another directory and in an eye blink, all of a sudden, I saw the total number of albums dropping to … 5300!!
Quite interesting, isn’t it?
This morning, a little bit pissed off by such a behaviour, I restarted a full sync of the network volume. I saw the total number of albums back to 6160 (After I removed the 2 albums added in the second step above).
Then, I added the 2 albums and, … the total number felt to 5300, again.
To be noted that I have two directories whose names differ by the case of the first character. I will try to change the names to see if this could cause of confusion…