Just updated from MB Version: 3.3.7169 P to Version: 3.3.7194 P and noticed this.
When lyrics are saved, <Lyrics?> no longer registers the change for "Y [unsynched]" or "Y [synched]".
Strangely though, if I mark a track as having no lyrics, <Lyrics?> does change to "N [no lyrics]".
My lyrics are stored as external files.