Necromance apology. Also brevity apology, typed this out then it got deleted.
Similar issue: 3 pane ML, artist album composer. Select a composer option, lots of different artist/albums in list. Sort by track number works. Sort by album works, but after the user-selected sort the secondary & tertiary sort columns are inbuilt defaults, artist & track number.

As you can see with the Session Victim EP this means track numbers are out of order for albums with multiple artists as it sorts by artist first.
Any way this could be fixed / feature requested to remember the last 3 (or more) user sorts and use those in reverse chronological order?
Cheers!