Teckin bulb brightness

I bought some Teckin SB50 bulbs and currently have one of them setup in HA via the Tuya integration.
I have found that, when I call the light.turn_on service, setting brightness_pct to anything lower than around 15 or brightness to anything lower than around 29 just turns the light off.
Using the Smart Life app I can set the brightness lower than this.

I even tried this:

  • Set the brightness to less than 15 percent in the app
  • Get the current value of the brightness attribute
  • Call light.turn_on the service, setting the brightness to this value

But the light still just turned off.

Am I doing something wrong or does the component just not support brightness values lower than this?