The Vanguard logo (whatever logo is that) that appears during the level up animation does not disappear and stays for all the rest of the match, it's kinda annoying, as you can see in the image. I tried to make a video to better show but I couldn't upload it, I hope the image is enough to make my point. I don't really think this could be an exclusive bug of the Crucible Warsat map on Io, but it happened to me twice, in two different occasions (two weeks ago and today, so I talk of different patch cycles) when I leveled up during a crucible match on that map.