I had an unpleasant experience with a trainer prior to our second week of puppy class. She was rude & condescending while providing unsolicited advice. She didn't introduce herself as a trainer, but proceeded to lecture me about correcting a certain behavior my dog was exhibiting. I didn't appreciate her tone or abruptness. She didn't ask if she could touch my dog or give her a treat. I'm not a first time dog owner and don't want my dog to behave badly. I wasn't ignoring her behavior, nor do I think it was "cute". Had she approached in a constructive & positive manner, I wouldn't be so offended.
On a side note, our trainer is great. Our puppy is doing well & behaves in class. I work with her daily & she's learning fast. I don't get a chance to correct her bad habit at home, because she only does it at school. That is why we are there, to get her socialized & learn how to train her. I'll finish this class but will probably go elsewhere for future training based on this experience.