Mapping output sometimes prints an extra wrapped line with no residues

To reproduce:

1). Load in the sequence below:
>FER1_SPIOL/1-111
....MAATTTTMMGMATTFVPKPQAPPMMAALPSNTG.RSLFGLKT..GSRGGRMT.MAAYKVTLVTPTGNV
EFQCPDDVYILDAAEEEGIDLPYSCRAGSCSSCAGKLKTGSLNQDDQ

2). View the PDB structure for 1a70
3). View the mapping output (Jmol window -> File -> View Mapping)