Why can't I remove greyed-out star ratings?
A rather odd thing has happened. Some of my tracks have greyed-out star ratings, see the graphic below. Tracks 1 and 5 are star ratings that I set. But I did not set the greyed out 2-star ratings to tracks 2 3 & 4. I can't remove the greyed ratings: all I can do is reset them to a half-star rating (I have an app to do that). On those tracks to which I have applied a half-rating, I can remove it in the same way one can remove any level of rating; but if I do that on a greyed rating, it simply resets itself to two greyed-out stars.