I have MP3 files (see attached sample) having what I believe to be a legal TXXX tag (name CJJTMP - see attached hex display) but Mp3tag doesn't see it (see attached Extended Tags display).
Any ideas, please?
2_test_with_unseen_tag.mp3 (16.4 KB)
Tags without content are not displayed
Well, yes.
Any ideas for a workaround? Or fix even! 
If you use "Save tag" the empty tag fields are deleted.
Thanks but youwch. I guess that's a bug, since load and save should preserve tags.