If MP3tag shows all the data, and then there are players that show some or none of the information, then I would say that MP3tag can do very little about the (missing) features of the player(s).
MP3tag did not support tagging of wav files for a long time. Basically, because support for tagged wav files is scarce.
To me it looks as though the support of wav files in the selection of players that you named, is still as flimsy as before.
The alternative is to convert the wav files to flac as the support of that tag format is (a little) better.