'... is this a known bug.' - I doubt it is a 'bug', let alone - a 'known bug'.
Audio CD's when inserted will first appear (labeled) as 'Audio CD', on the 'Desktop'.
Double-clicking on the 'Desktop' icon of the 'Audio CD' will result in a window with (audio track) files named '1 Audio Track.aiff' through 'x Audio Track.aiff', where 'x' is the number of the last file.
If 'iTunes' (or an equivalent application) is launched (prior to, or after the 'Audio CD' insertion), and its preferences are set accordingly - the application will search a known internet database ('
Gracenote CDDB' with respect to 'iTunes') for the title of the CD and respective (audio track) files. If so, the CD (on the 'Desktop') and the title of its associated files are renamed.
It may just be, that the information obtained from the internet, based on the information obtain by the CD, is in error.
If your post applies, as an error in the 'Gracenote CDDB', via 'Gracenote's '
FAQ' link - one can submit 'edits or new entries'.