qbuf problem

[wuyiwen-genomics-cn]

Hi, I just noticed the qbuf in features.rs -> extract_features -> reads[qid as usize].seq.get_subseq does not work as it supposed. If I am not wrong, qbuf should be assigned with seq value in range [qstart, qend). In decode function, it is assigned with correct seq value. However, when I print qbuf outside "match ow.overlap.strand ", qbuf has some different values at some positions.

For example, in decode function, qbuf is assigned with 84, 84, 65, 71, 65, but printed qbuf is 84, 84, 65, 67, 65.
At position 4, the value is 67 instead of 71.

May I know why it happened? I did not find any extra function called.
Thank you!