Laza, maybe it's the file I use compared to what you use. I just followed the same selections from what I could tell and everything was the same...you got 14 files and I got 10.
My guess is that you've gone into deeper settings than I can see from your screen shot.
I did try again and went to the MS Windows category and checked off all sizes and got 13 files this time.
It just would be nice that it included all the sizes so I get all the same in the folder.
Sue