“Yeah, but … .” and “Yeah, but.”
So similar in appearance, but so different in meaning.
If the speaker said something after the “but”, you may have a valid objection on your hands. If you were having a discussion, you still are.
But if it is just “Yeah, but.” and end of sentence, it means anything but that the person saying them is agreeing. Worse than that, the person would rather be “right” than get something correct.
I think it is rather rude to do that myself. What do you think?