Download this MP3 file and edit with Mp3tag:
The weird thing here is, after I remove ID3v1 and ID3v2.3 tag, there is also another layer of ID3v2.4 tag inside MP3.
While I originally thought: ID3v2.4 is superseded ID3v2.3; so ID3v2.4 or ID3v2.3, only one of them can exist in MP3 file.
I was wrong.
My question is: How can people acknowledge this weird situation? - Without having to remove one layer of tag, and then recognize that there is another layer of it.
I hope Mp3tag will have the ability to notice users that the MP3 file they are editing is tagged normally or having layered tag.