Over at Player Attack they've discovered that illegally downloaded versions of The Sims 4 have a nifty anti-piracy feature.
"Pirated versions also apply the pixel censor cloud to naked Sims... but then doesn't remove it once they've put their clothes back on. Instead, the cloud expands and grows, until the entire game screen is permanently blurred and blocked out."
Even more amusing is that players who pirated the game and discovered this issue have been posting for help on The Sims 4 forums. Only to be shamed as a pirate.