Easytag Destroys ogg Vorbis files!!
As of easytag 2.4.3, using easytag to tag ogg Vorbis files permanently destroys them. EasyTag advertises support of ogg Vorbis tagging, this should be removed immediately, and easytag should immediately be updated to refuse to attempt to process ogg Vorbis files until it can do so safely.
When editing ogg vorbis files in easytag, after they are saved, the files contain
Negative or zero granulepos (-104) on Vorbis stream outside of headers. This file was created by a buggy encoder
Which renders them unplayable by mpv