Error while setting up platform yeelight

[corneels]

Home Assistant release with the issue:

0.67.1

Last working Home Assistant release (if known):
Unsure of exact version, but I last updated about three weeks ago.

Operating environment (Hass.io/Docker/Windows/etc.):

Hass.io

Component/platform:

https://www.home-assistant.io/components/light.yeelight/

Description of problem:
Yeelight fails to set up during restarting process.

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant):

light:
  - platform: yeelight
    devices:
      10.0.0.63:
        transition: 500
        use_music_mode: true
        save_on_change: false
      10.0.0.61:
        transition: 500
        use_music_mode: true
        save_on_change: false
      10.0.0.38:
        transition: 500
        use_music_mode: true
        save_on_change: false

Traceback (if applicable):

2018-04-26 14:47:03 ERROR (MainThread) [homeassistant.components.light] Error while setting up platform yeelight
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/homeassistant/helpers/entity_platform.py", line 82, in async_setup
    SLOW_SETUP_MAX_WAIT, loop=hass.loop)
  File "/usr/lib/python3.6/asyncio/tasks.py", line 358, in wait_for
    return fut.result()
  File "/usr/lib/python3.6/concurrent/futures/thread.py", line 56, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/lib/python3.6/site-packages/homeassistant/components/light/yeelight.py", line 135, in setup_platform
    name = device_config[CONF_NAME]
KeyError: 'name'

Additional information:
I had this issue previously, I cannot recall exactly what caused the lightbulbs to reappear but I believe after a long period of time they were suddenly discovered by Home Assistant.

I have assigned static IP addresses in my router, I have also verified that the lightbulbs work via the Yeelight app and also appear in my router's connected devices list at the correct addresses. I have also factory reset my router in case it is a router issue. I have also changed routers in case it is a router issue.

This is on a fresh install of Hass.io due to other issues that I have been encountering related to Home Assistant Cloud.

Yeelight was working fine previously, though it did sometimes appear in the logs due to slow set up. The bulbs would always eventually appear, though.

[corneels]

Okay, after much ado I've figured out that if I specify a name for the yeelight bulb in configuration.yaml as below, it works:

light:
 - platform: yeelight
   devices:
     10.0.0.63:
       name: mybulb
       transition: 500
       use_music_mode: true
       save_on_change: false

I figured out what was going on by looking at the traceback and the file in question.

I believe the issue is that the documentation states that a name for the bulb is optional. However for some reason, it doesn't seem to auto-assign names if no name is provided?

Cheers.