Flacs are converted from wav with flacon, something that I used before and there was no problem. Tags are done with easy tag. And it looks like this

But guayadeque sees it like this

And I can't edit that with guayadeque. I mean, I can, it seem to be OK until the next restart/rescan/update. Changes are not saved.
here's the file https://www23.zippyshare.com/v/spRgDiDC/file.html