All features from a BED file show as 'CDS' after tabbix indexing

[thpar]

Compressed BED file with bgzip
Indexing:

tabbix -S 1 -p bed bed_file.gzip

All features will now be labeled as "CDS" instead of with the trackname or filename.

Uncompressed BED files will be shown correctly.

[thomasabeel]

Example data to reproduce? Don't have any bed files lying around currently.