Potential sync issue in CC decoder

I noticed something recently that made me think that there's potentially an issue with locking onto the CC decoding stream properly. I was playing something with CC on and skipped back and saw some text come up, then I skipped back again further in time and the text did not show up again until after the point it showed up from that first seek. Maybe this is related to flushing some state in the decoder...not sure exactly because there isn't really much to 'lock' onto in the CC stream. Just making a note of it here to maybe investigate later. :)