Lidl HG08010 (Livarno outdoor spotlight) turns off immediately after turning ON / Sends false "action":"off"

What happened?

Device:Model: Lidl HG08010
Description: Livarno Home outdoor spotlight

When turning on the light (or a Zigbee group containing these lights), the devices immediately turn themselves off within less than a second.The debug log shows that upon receiving the ON state, the light hardware immediately reports back a state change to OFF and actively fires an internal "action":"off" event.

This behavior causes the light to shut down instantly, especially when state_action: true is enabled in Zigbee2MQTT.Increasing transition or configuring color_power_on_behavior does not prevent this.

I have 9 devices of this type, all have this problem, independed of Coordinator type or Z2M Version (noticed since 2.x)

What did you expect to happen?

Just the Light to be on when triggered on.

How to reproduce it (minimal and precise)

Steps to reproduce:Turn the Lidl HG08010 light ON.
The light flashes for a millisecond and goes dark.The log shows an automatic state bounce back to OFF.

Proven Workaround:The only way to keep the light stable is a software workaround: Send an initial ON command with a specific brightness (e.g., 250), wait 1 second, and then send a second ON command with a slightly altered brightness (e.g., 254). This forces the internal controller to re-initialize the driver properly without crashing.

Zigbee2MQTT version

2.12.1

Adapter firmware version

8.0.2 [GA]

Adapter

SLZB-MR4U

Setup

HA OS on Pi5 with SLZB-MR4U

Device database.db entry

No response

Debug log

Info 2026-07-24 01:06:48z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/Strahler Süd Z2M', payload '{"brightness":1,"color":{"x":0.4369,"y":0.4041},"color_mode":"color_temp","color_temp":333,"state":"ON"}'
Info 2026-07-24 01:06:48z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/Strahler Süd Z2M', payload '{"brightness":1,"color":{"x":0.4369,"y":0.4041},"color_mode":"color_temp","color_temp":333,"state":"OFF"}'
Info 2026-07-24 01:06:48z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/Strahler Terrasse Rechts', payload '{"action":"off","brightness":1,"color":{"x":0.4369,"y":0.4041},"color_mode":"color_temp","color_power_on_behavior":null,"color_temp":333,"do_not_disturb":null,"effect":null,"last_seen":"2026-07-23T23:06:48.413Z","linkquality":84,"state":"OFF"}'
Info 2026-07-24 01:06:48z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/Strahler Terrasse Rechts/action', payload 'off'

Notes

No response

No repository file, test, or entry point is identified in the report. Start by reproducing the Lidl HG08010 failure with the supplied ON/OFF debug sequence and compare it with the documented two-command brightness workaround. Done means an ON command leaves the light on without an immediate OFF state or action event.