Get Artist Albums does not return all results

[alex31683]

Currently I am trying to query and return ALL of an artists music (except compilations) so 'single', 'album' and 'appears_on'. When making the call to api.spotify.com/v1/artists/${id}/albums with include_types ['single', 'album', 'appears_on'] it only returns appears_on tracks of 'album_type: compilation' and not 'album_type: single/album' (see screenshot 1). It does return these values if I only use appears_on for my include types in the request (screenshot 2). Please advise why this is happening and if there is any fix planned! Cheers.