MQTT light brightness doesn't change state when necessary

[tedstriker]

Home Assistant release (hass --version):
0.14.2

Python release (python3 --version):
3.4.2

Component/platform:
MQTT light

Description of problem:
when a brightness level is received at brightness_state_topic it's not recognized properly.
Only if it's on already, changes in brightness are updated.
Turning it off by brightness = 0 is not possible as well.

Expected:
I'd expect the light to change it's state from OFF to ON if a brightness > 0 is set.
Also I'd expect it to toggle from ON to OFF if the brightness level has been set to 0.
None of these transitions work.

[thefrenchmatt]

I have a similar issue with input_slider which hass seems not to be parsing as an integer, despite trying to set it with default and int() filters. I will first search if my issue has been posted...

[Spartan-II-117]

Do #1495 & #1864 solved this issue?

[dale3h]

Closing this as it appears to be fixed by #1495 (see comments on the PR page).