I'm constantly having arrows pass harmlessly through mobs, typically wolves and bears. I'm not talking about shots from a million miles away where you could have just aimed slightly off and legitimately missed, either. I'm talking about being close enough to see the arrow actually sail right through the body as if they were somehow incorporeal. Most annoying. Marksman is still my attack of choice despite this.
Wow, that svcks! And I realize you're not just talking about sailing iron arrows from iron bows through ghosts - that would be normal, but bears and wolves? Ugh! I must say, I haven't seen this on PC with UOP though. And we'd remember it well. If a charging bear ignored Buffy's arrow, she would definitely wet herself as she scrambled to go invisible or command him.