Origin map of the old broken save:
If you look back at the political map, you can see that the red country has a blue origin inside of it, and that the Brazil country has a NONE origin, both of these were annexed countries, they didn't have those origins. I think annexing them is what changed their origin, the random button may be a culprit again?
1 day later edit: After playing in a new save for a bit, the bug happened again, I think the random button is the culprit, the "none", aka atheism, spread initially, but only in a certain area, THIS BUG BREAKS YOUR SAVE, you can't draw cards anymore if your save file has the bug, so if anyone is reading this, I recommend checking frequently if the bug has happened, if it did, and you did a lot of progress, bring only adopt religion to the max and adopt back the country's religion, this may fix it, though I have not tried it, but it's worth an attempt, DO NOT SAVE THE GAME WHILE THE BUG IS IN THE WORLD, you will still be able to enter the save but you will be softlocked, I don't know the code of the game, but maybe the save only stores a single religion for each country, and because of that, the game breaks, that's just a theory tho.
For the dev, someone in the replies also said that origins are also bugged, this has also happened to me in the new save, it did the exact same thing as the religions (my Albania is divided in both greek (original origin) and persian, just like the religions in the old save's southern texas)
Old post: Found this out when I got the adopt religion card for the southern Texas nation
The religion I'm talking about is the orange religion, you can see the recently taken land because of it too, for example Panama invaded the mini colombia and the country above itself, you can see what it took by the orange, the DR annexed a country, you can still see it in faith mode because of the orange religion, same thing with the big Brazil, the annexed countries didn't have those religions, the northern florida country was recently taken land that split apart in the previous turn, so no I didn't give it the orange religion, the only region with the religion was the central american countries that are not panama or the yellow religion countries
You can also see here that it even showed me the diff religions if you click the area in political mode, which definitely confused me when I encountered it, because I thought that maybe it was intentional, of course I thought that before I saw the rest of the map
Not sure how to replicate it and why it happened, and yes adopting one of the religions did make the whole country have the same religion again, also I loaded the save and now I can't draw cards so that's that. And just in case, yes I tried expanding territory in other saves but the bug didn't happen, but just in case this matters, I used the random nation feature the whole time for the now broken save
Edit: and no, I didn't save over the old file, so I still got my world
