Author sort fails sometimes in tag browser
I just cannot understand this issue.
Look at the screenshot.
"Marta Ribera de la Cruz" would be sorted "Cruz, Marta Ribera de la" with default Calibre criteria. And in this way it is sorted in the tag browser. BUT you can see how author sort is actually and explicitly set to the correct Spanish "Ribera de la Cruz, Marta"...
But this is not a general fault. Because in "F" you can see "Ignacio Ferrando Pérez", in which Calibre is obviously following the explicitly set "Ferrando Pérez, Ignacio", not its default "Pérez, Ignacio Ferrando".
(Or "Gabriel García Márquez"--"García Márquez, Gabriel", which also works fine).
Why do "Ferrando Pérez, Ignacio" and "García Márquez, Gabriel" work, but not "Rivera de la Cruz, Marta"? Am I doing something wrong?