I would give the question a flat "yes."
It is common, but not a "given." Many of us have had unintentional rudeness trained out of us. Many, I believe, are less aware if it than others, possibly because those around us see it, but don't say anything out of politeness, and possibly because they themselves are aware that we may not understand what we've done or said. Others among us are acutely aware of it only because we may be surrounded by people that have no problem being blunt about it, perhaps because they don't sense anything "amiss" about us other than our "rudeness."
I, for one, was among the last group for almost all of my childhood. It was, I think, because of my own rudeness, though unintentional, yet otherwise appearing as "normal" as any other child, that many thought of me as rude and selfish. I was probably in my early thirties before I even began to understand why it might be happening, and not until I discovered AS that I finally did know why.
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I'm not likely to be around much longer. As before when I first signed up here years ago, I'm finding that after a long hiatus, and after only a few days back on here, I'm spending way too much time here again already. So I'm requesting my account be locked, banned or whatever. It's just time. Until then, well, I dunno...