This is a rare Crota bug as I know of only two players getting this. One of which is my clan mate Sicuangel She is in OFL Order of Forgotten Light. She apparently reached a weight of darkness of x20 and it showed. It was kind of funny but it was definitely a bug. Or it seemed like one. I also saw a player in the brave forum post about it as well. It's a rare bug but it has happened twice. My clan member's incident happened in normal mode, if that matters at all