"Arrange icons by ..." - Not quite right

I almost feel bad pointing this out after such obvious effort went into this most recent update, but the menu ordering doesn't quite work right. Specifically, there doesn't appear to be any differnce between "Ascending" and "Decending" other than the position of the folders in relation to the icons when sorting by date created or date modified.

After playing around with it a bit more, I'm more confused than before. There doesn't seem to be any pattern to the way the files get ordered. Sometimes, most of the newest files will be at the top when I sort by date modified and select decending (but not all). Sometimes it appears to be sorting by name for a while, then changing to some other sort criterea. ???

The contents of the directory I'm sorting are perhaps a bit strange. There are 145 files (there used to be many more, but they now reside in other directories), many of which have been backed up and restored across several different OS versions and file systems. With the exception of the newest files, most of them list modified dates that are earlier than the created dates. Not sure what else I can tell you....