Kodi has fudged the MKA tag reading. They don’t read the full Matroska spec tags for Tracks, Kodi looks for specific tags needs chapter names (from memory) it also needs MusicBrainz tags, implying it gets data from MusicBrainz.
I was provided with a sample mka that was used by Kodi developers that works in Next Kodi. I added code to MMH Chapter Editor to create the same metadata, and those MMH tagged MKA files also work in next Kodi in my testing. (MKA without a Cue works in Kodi, it’s imported into the Kodi music library)
In MMH 8.0.13 beta File Manager reporting does not read mka tags, just cue metadata data which is limited. MMH 9 beta 1 it reads MKA/MKV tags for the music report. Is that where you see ‘missing tags’
@M-K ?
I’ll run the MMH 9 beta File Manager scanning on one of those mka’s to see what tags it misses. Or I will look at the Kodi music db. Or maybe you can post the missing values (of course there in no guarantee Kodi will read them all now anyway).