It is an anomaly, I am sure Prospere or Pete will fix it. It wont affect your subtitlesPlease fix the subtitle name from 'qbu' to whatever language it's supposed to be.
I think your response was supposed to be a joke, but I'll answer back just in case. What makes me think that 'qbu' wasn't supposed to be the subtitle is that the video is in English. What language does 'qbu' represent?what makes you think that's not what it is supposed to be?