Unexpected values set when publishing JSON with multiple properties to set

[robvanoostenrijk]

What happened?

When publishing the following device message to Zigbee2MQTT, the device property values are not set correctly:

{
    "system_mode": "cool",
    "preset": "manual",
    "current_heating_setpoint": 28
}

The values set by Zigbee2MQTT are:

{
    "child_lock": "UNLOCK",
    "current_cooling_setpoint": 28,
    "current_heating_setpoint": 28,
    "deadzone_temperature": 1,
    "fan_mode": "medium",
    "linkquality": 47,
    "local_temperature": 27,
    "local_temperature_calibration": 0,
    "preset": "manual",
    "schedule": "06:00/20 11:30/21 13:30/22 17:30/23 06:00/24 12:00/23 14:30/22 17:30/21 06:00/19 12:30/20 14:30/21 18:30/20",
    "state": "ON",
    "system_mode": 28,
    "system_mode_device": "cool"
}

Somehow system_mode got the value 28 instead of the requested value cool

What did you expect to happen?

The values on the device to reflect what was published via MQTT message, "system_mode": "cool":

{
    "child_lock": "UNLOCK",
    "current_cooling_setpoint": 28,
    "current_heating_setpoint": 28,
    "deadzone_temperature": 1,
    "fan_mode": "medium",
    "linkquality": 47,
    "local_temperature": 27,
    "local_temperature_calibration": 0,
    "preset": "manual",
    "schedule": "06:00/20 11:30/21 13:30/22 17:30/23 06:00/24 12:00/23 14:30/22 17:30/21 06:00/19 12:30/20 14:30/21 18:30/20",
    "state": "ON",
    "system_mode": "cool",
    "system_mode_device": "cool"
}

How to reproduce it (minimal and precise)

Publish device set message via mosquitto_pub:

mosquitto_pub -t 'zigbee2mqtt/Airconditioning - Den/set' -m '{ "system_mode": "cool", "preset": "manual", "current_heating_setpoint": 28 }'

Similarly running:

mosquitto_pub -t 'zigbee2mqtt/Airconditioning - Den/set' -m '{ "preset": "manual", "system_mode": "cool", "current_heating_setpoint": 26 }'

Sets "preset": 26, which is unexpected as well.

Zigbee2MQTT version

1.40.2 commit: e06848d

Adapter firmware version

20240710

Adapter

xzg.xyzroe.cc

Setup

Plain

Debug log

No response