When you attempt to sort by the date "Added" column (%_file_create_datetime%), the column does not sort correctly. The date resets in 2015. For example, if you sort by oldest first, it will sort like this:
As you can see in the example, it will start with the first file added in 2015 through the most recent file added in 2015 and then reset to the oldest file added.
If you reverse the sort and sort by newest first, it starts with some arbitrary date in the past, for me it was 12/16/2014 then list from oldest as of 12/16/14 to the oldest file and then will list the most recent files from todays date down. For example, the results will look like this.
As you can see in both examples, there is no longer any way to get the most recent file at the top or the bottom of the column; the date values reset in 2015.
I have only noticed this as of 2015. Dates older than that (from 2014 and older) all sort correctly.