"Free items" is a censored phrase

I was writing a sign that says "free items" next to a chest full of items I'm giving away. When I pressed enter, it censored the sign. (It may be worth noting that this occurred on a Realm.) "Free items" doesn't seem like a harmful phrase, so I'm not sure if this is a bug or just a poor decision in terms of what to censor. In any case, it would be great to have this fixed. Thanks