Kodi Does Not Play Album Tracts in Order

Using Kodi 17.0 Beta 7 from Windows Store, modern UI version on Windows 10. Tracts in albums do not play in order but rather seem to play at random or perhaps alphabetically instead of numerically. How do I get the tracts to play numerically? One album starts with tract 1 then skips automatically to tract 20. Used to work in previous versions of Kodi. Am I missing a setting?
TIA
J.