alt inst: no possible configurations for this FAT type

Binary package hint: debian-installer

alt installer, selected a fat16 partition, mount point /windows0
done, confirm, "bug has been discovered!!!"

Jan 30 14:57:06 debconf: --> METAGET partman/filesystem_short/fat16 description
Jan 30 14:57:06 debconf: <-- 0 fat16
Jan 30 14:57:06 debconf: --> SUBST partman-basicfilesystems/progress_checking TYPE fat16
Jan 30 14:57:06 debconf: Adding [TYPE] -> [fat16]
Jan 30 14:57:06 debconf: <-- 0
Jan 30 14:57:06 debconf: --> SUBST partman-basicfilesystems/progress_checking PARTITION 1
Jan 30 14:57:06 debconf: Adding [PARTITION] -> [1]
Jan 30 14:57:06 debconf: <-- 0
Jan 30 14:57:06 debconf: --> METAGET partman/text/scsi_disk description
Jan 30 14:57:06 debconf: <-- 0 SCSI%s (%s,%s,%s) (%s)
Jan 30 14:57:06 debconf: --> SUBST partman-basicfilesystems/progress_checking DEVICE SCSI1 (0,1,0) (sdb)
Jan 30 14:57:06 debconf: Adding [DEVICE] -> [SCSI1 (0,1,0) (sdb)]
Jan 30 14:57:06 debconf: <-- 0
Jan 30 14:57:06 debconf: --> PROGRESS START 0 1000 partman/text/please_wait
Jan 30 14:57:06 debconf: <-- 0 OK
Jan 30 14:57:06 debconf: --> PROGRESS INFO partman-basicfilesystems/progress_checking
Jan 30 14:57:06 debconf: <-- 0 OK
Jan 30 14:57:06 debconf: --> SUBST partman-basicfilesystems/progress_checking STATE (null)
Jan 30 14:57:06 debconf: Adding [STATE] -> [(null)]
Jan 30 14:57:06 debconf: <-- 0
Jan 30 14:57:06 debconf: --> PROGRESS INFO partman-basicfilesystems/progress_checking
Jan 30 14:57:06 debconf: <-- 0 OK
Jan 30 14:57:06 debconf: --> PROGRESS SET 0
Jan 30 14:57:06 debconf: <-- 0 OK
Jan 30 14:57:06 debconf: --> PROGRESS STOP
Jan 30 14:57:06 debconf: <-- 0 OK
Jan 30 14:57:06 debconf: --> SUBST partman/exception_handler TYPE A bug has been discovered!!!
Jan 30 14:57:06 debconf: Adding [TYPE] -> [A bug has been discovered!!!]
Jan 30 14:57:06 debconf: <-- 0
Jan 30 14:57:06 debconf: --> SUBST partman/exception_handler DESCRIPTION There are no possible configurations for this FAT type.