I think I hit/chip balls back all the time but its not like I'm chasing down every out serve and taking big cuts at the ball. I've never had anyone say anything to me so I guess it's not an issue. In fact ive never heard of this being an issue in any match. On first serves it's just instinct to get the ball back. You don't raelly have time to think about it.
Please excuse my punctuation and grammar.