Usebindportip dont work

Hello. i use traefik with docker with option --providers.docker.usebindportip=true

i want use this variant then request port = endpoint port without add port label in container:

i try run whoami container from manual with only 1 label:

and in traefik log i receive error about port missing:
time="2022-01-03T06:22:40Z" level=error msg="service \"whoami-traefik-test\" error: port is missing" container=whoami-traefik-test-

What is problem ?

? need more information ? or what

okey i set bug for team