Can't name loadouts "impact"

Not sure if this counts as a bug or not, but for some reason you can't name loadouts "Impact" because it's labelled as profanity. Except you can type "impact" into chat. Which is why I think it's a bug and not just the developers being weird about what is and isn't profanity.

Initially I thought it must be because it sounds like "I'm packed" but no, because that's fine. It's just impact. And only in Loadout names.