Fourth Council of Constantinople

True or False Pope? Accurately quotes Canon 10 of this council.  One can compare it to a book Disciplinary Decrees of the General Councils.  They give the quote as:

As divine scripture clearly proclaims, Do not find fault before you investigate, and understand first and then find fault, and does our law judge a person without first giving him a hearing and learning what he does?. Consequently this holy and universal synod justly and fittingly declares and lays down that no lay person or monk or cleric should separate himself from communion with his own patriarch before a careful enquiry and judgment in synod, even if he alleges that he knows of some crime perpetrated by his patriarch, and he must not refuse to include his patriarch’s name during the divine mysteries or offices.

In the same way we command that bishops and priests who are in distant dioceses and regions should behave similarly towards their own metropolitans, and metropolitans should do the same with regard to their own patriarchs. If anyone shall be found defying this holy synod, he is to be debarred from all priestly functions and status if he is a bishop or cleric; if a monk or lay person, he must be excluded from all communion and meetings of the church until he is converted by repentance and reconciled.

Fourth Council of Constantinople

One of their arguments in regard to Cum Ex Apostolatus Officio is that it was not retained by the Code of Canon Law in 1917.  This being a disciplinary decree might also not be retained.