Benedict XVI stated soon after his abdication that he was retaining the mumus of the papal office. It was noted by a Traditional lawyer in the USA that if he did not resign the mumus, then he did not resign and was still pope. The question of force or threat, or pressure to resign still has not been answered.
As for Pope Francis, he may be sly enough not to be easily labeled as a "formal heretic" but he appoints and otherwise fosters bishops and cardinals who are heretical, so he may be leaving the 'official'changes in Church Teaching to a successor although he has already allowed the
heretical practices and even condoned them 'informally'.

Si el Profesor Roberto de Matte dice que un papa puede perder poder de jurisdicción del papado porque puede renunciar o perderlo porque entonces niega que el pecado de la herejía y apostasía de Bergoglio causan tambien la perdida Ipso Facto del poder de jurisdicción?
Sanción canónica del Código de Derecho Canónico:
La herejía, el cisma y la apostasía están tipificados como delitos canónicos castigados con excomunión latae sententiae (cf. can. 1364).
El Papa Pío XII decretó en su Encíclica Mystici Corporis Christi, la Doctrina sobre el Cuerpo Místico de Cristo, que el cisma, la herejía y la apostasía son graves pecados que separan por su misma naturaleza al hombre del Cuerpo de la Iglesia.

Dear Professor Maite please answer us:
Since when do you think Jorge Bergoglio fell into heresy?
Because what we affirm is that Bergoglio is not pope because he was already a formal heretic in Argentina before being invalidly elected. Where he already allows the sacrilegious communion to Gay couples and adulterers and where he already allowed gay adoptions and supported homosexuality. And the Magisterium of the Catholic Church decrees invalidates the election of a heretic as pope.

"Estoy convencido de que el Papa Francisco no cree en la existencia del infierno" Profesor Roberto de Mattei
Negar el dogma del Infierno es negar completamente la fe católica entonces el Profesor Roberto Mattei no debe llamar a Bergoglio papa porque esto demuestra que Bergoglio ni siquiera profesa la fe católica ya es hora de llegar a la conclusión de que Bergoglio en Argentina no fue que perdió la fe católica sino que nunca la tuvo porque cuando Bergoglio ingresó al seminario ya estaba directamente involucrado con el comunismo esto nos demostraría que Bergoglio fue uno de esos infiltrados comunistas que entró al seminario con la finalidad de atacar a la Iglesia desde Adentro.

My compliments to Gloria.tv on getting this interview. Roberto seems like a very nice and knowledgeable person however his responses were slow and labored (possibly because English is not his primary language) so it is difficult to listen to him. I would not have had the patience to sit there for the entire time. I hope Roberto invited team Gloria out to a nice lunch (at an expensive Italian restaurant) afterward.

Here is a text summary of the main points covered in the interview.
In the text, Roberto gives the following answer as to how to deal with a pope who promotes errors which oppose the Tradition of the Church:

We need to have the courage to say: "Holy Father, you are the first one responsible for the confusion which exists today in the Church;" "Holy Father, you are the first one responsible for the heresies which are circulating in the Church today."

That, of course, is true. But, who is going to say it to the pope? Who will have the courage to say it often enough and forcefully enough so that it will have the desired effect? Will Burke and a few other cardinals be enough? Is it more likely that the corrections will be ignored as corrections/questions have been ignored in the past?
There is an answer but in order to mobilize enough cardinals Pope Francis would have to go much further to the left that he already has.