For instance, if one content has the title "Diplôme d'Etat de professeur de danse option danse contemporaine" and one "Diplôme d'Etat de professeur de danse option danse classique", it is possible that the first one comes in before the second one (if it was indexed before).

Indeed, title_s_sort is indexed with the value Diplôme d'Etat de professeur de danse option danse because in index time we truncates the first 50 characters.