In her book, Benedict XVI: Pope "Emeritus"? Estefanía Acosta argues that Benedict is still the pope and his resignation letter evidences such, including purported errors in the Latin original. I will not enter the debate about (the proper technical term being "Beneplenefrancisvacantism"), but the following does show the importance in Catholicism of rescripts, briefs, and papal bulls having to be accurate in its Latin for it to be binding:
- “For centuries it was a constant
principle of interpretation, that if a canonical act in Latin contained errors
it was not to be construed as valid, but had to be redone” [Munus
and Ministerium: A Canonical Study]
- “It is a principle of traditional
canon law that every rescript, brief, or papal bull containing a fault in the
Latin is null. Saint Gregory VII (Registrum 1.33) [11th century] declared void
a privilege granted to a monastery by his predecessor Alexander II, <<on
account of Latinity corruption>>, which constitutes <<a
fairly obvious sign>>. The Ad audientiam decree of Pope Lucius
II [12th century], which appears in the body of canon law (Gregory IX Decrees,
IX, 1, I, title III, de Rescriptis, c. XI [13th century]) establishes that
<<false Latinity invalidates a rescript of the pope>>. The
pope forbids giving credit to a pontifical letter <<since it contains
an evident construction fault>>. The gloss (within the corrected
official text published by order of Pope Gregory XII in 1582) explains for this
purpose that a pope’s rescript <<must not contain any fault>>,
since it is <<elaborated with enough time>>. A fault in the
Latin constitutes such a presumption of nullity that no evidence on the
opposite sense can be admitted. Affirming that a decree is null does not mean that it is a false document, but that Pope
Benedict XVI would have written it carelessly. [. . .][¿Errores
en la renuncia del Papa?] [Conferenza
sulla Rinuncia di Papa Benedetto XVI: Trascritto dei Interventi] (Estefanía
Acosta, Benedict XVI: Pope “Emeritus”? [trans. Clara Eugenia Laverde and
Estefaníá Acosta; n.p., 2021], 77)