There is a glitch that happens when a Center of Reformation spawns on the same province that a Center of Reformation is actively converting. This causes the province to have the converting Center of Reformation's icon displayed instead of the newly spawned Center even though the conversion has stopped and there is in fact a Center in the province. Unfortunately I don't think this bug can be fixed by me because it is the game and not the mod.

i was playing as gelre and an event to convert a province to a protestant faith popped up in 1450, it changed the province religion to "no religion" although im not sure if it might have been caused by one of the other mods i was using

I am playing in Italy, I chose to convert to "Vasantine" and I about twice a month I get an event called the "Zwinglist Branch" and it gives -100% missionary strength in the province, and sometimes it says that a "Zwinglist Core" spawned in my capital, only for it to not be there. It is getting severely annoying as I can't go 3 seconds without getting the event over and over again.