Sorting albums with “Artist then Year” not working?


Hi, I just began using vox player recently and I have a question about sorting albums.

My library consists of FLAC files with internal CUE sheet.
FLAC files all have the date/year metadata as well as REM DATE field in internal CUE sheet.
When I switch between “Artist then Title” and “Artist then Year” to sort albums, the listing is stuck with “Artist then Title”.
What are the criteria/requirements/restrictions for getting “Artist then Year” to work?