[MQTT 2.5] Problem with receiving status updates on some things

Have you read this topic:

For brightness I use:

getZigbeeBrightness.js

(function(x){

    var result;
 
    var json = JSON.parse(x);  
    result = json.brightness * 100 / 255;

    return result;
    
})(input)

setZigbeeBrightness.js

(function(x){

    var brightness = x * 255/100;

    var result = new Object();
    result.brightness = brightness;
 
    return JSON.stringify(result);
    
})(input)

My things file:

Thing topic zigbee2mqtt "Bedroom Light" @ "Bedroom" {
    Channels:
        Type switch : power  "Power"               [ stateTopic="zigbee/0xb0ce1814030ac279/state",
                                                    commandTopic="zigbee/0xb0ce1814030ac279/set/state", on="ON", off="OFF" ]
        Type dimmer : dimmer "Dimmer"              [ stateTopic="zigbee/0xb0ce1814030ac279",
                                                    commandTopic="zigbee/0xb0ce1814030ac279/set", transformationPattern="JSONPATH:$.brightness", formatBeforePublish="{\"brightness\":%s}" ]