I just played a game where I'd unlocked Nationalism and taken Spoils of War. I then changed plans and switched to Freedom policy but noticed I was still getting the cultural plunder when capturing cities.
I was playing as India so it wasn't a Denmark/Jelling Stone issue. After the first time it happened I checked before/after capturing the next town to make sure it wasn't just the message, I was definitely getting the culture added to my pool.
I was playing as India so it wasn't a Denmark/Jelling Stone issue. After the first time it happened I checked before/after capturing the next town to make sure it wasn't just the message, I was definitely getting the culture added to my pool.