Change in json format: unadressed led not cleared

Questions
1

With home assistant I send yaml to the wled device.

I’m using a led strip as a huge voltmeter for my robotic mower.
It creates a bar from the highest (last) led downwards, proportional to the voltage, at a dim level.
The next two leds are at max level. If the mower is in error state, they blink
With 0.15 the rest of the leds (up to the first in the chain) were dark.
With 0.15_1 the rest just keep the state it was before.
How can I blank the rest with the new firmware?

I send this;

ip_address: “{{ ip_address }}”
payload: |
{
“on”: {{ on }},
“bri”: 255,
“transition”: 7,
“mainseg”: 0,
“seg”: [
{
“id”: 0,
“start”: {{ stop_led }},
“stop”: {{ stop_led +2 }},
“grp”: 1,
“spc”: 0,
“of”: 0,
“on”: {{ on }},
“frz”: false,
“bri”: 255,
“cct”: 127,
“set”: 0,
“col”: [{{ color }}, [0,0,0], [0,0,0]],
“fx”: {% if mower_state == ‘error’ and error_state != ‘battery_restriction_due_to_ambient_temperature’ %}1{% else %}0{% endif %},
“sx”: 128,
“ix”: 128,
“pal”: 0,
“c1”: 128,
“c2”: 128,
“c3”: 16,
“sel”: true,
“rev”: false,
“mi”: false,
“o1”: false,
“o2”: false,
“o3”: false,
“si”: 0,
“m12”: 0
},
{
“id”: 1,
“start”: {{ stop_led + 2 }},
“stop”: 101,
“grp”: 1,
“spc”: 0,
“of”: 0,
“on”: {{ on }},
“frz”: false,
“bri”: 20,
“cct”: 127,
“set”: 0,
“col”: [{{ color }}, [0,0,0], [0,0,0]],
“fx”: 0,
“sx”: 128,
“ix”: 128,
“pal”: 0,
“c1”: 128,
“c2”: 128,
“c3”: 16,
“sel”: true,
“rev”: false,
“mi”: false,
“o1”: false,
“o2”: false,
“o3”: false,
“si”: 0,
“m12”: 0
}
]
}

2

Use correct JSON using segments.
Get a look at API section on KB.

BTW you may want to use Percent FX instead.

3

Could you be a little more specific regarding what changed in this version since it worked in the previous version?

4

may be related to global buffer, try disabling it. This is however not a good solution as in 0.16 that will be no longer optional.

to make it work, always set all pixels, unset pixels may always have undefined behaviour and keeping their last state is actually more logical IMHO.