Some Debian bugs filed for issues encountered in Kali:

#684865: live-build: lb_binary_syslinux fails to include flavour in menu entry
#684891: live-build: add a config parameter to define the project name
#684893: live-build: fails to find bootloaders files when running from git checkout
#684896: live-build: loading of build.sh does not work as expected in various scripts