Ikea Tradfri LED1836G9 E26 bulb -> sporadic operation

I appear to have successfully paired a Tradfri LED bulb but it’s operation is sporadic and becomes out of sync with the UI. Two other Tradfri devices work well (power outlet and motion sensor) using RPi Zero W Gateway + ConBee 2. Any thoughts based on the node entry?

“14b457fffe26538a”: {
“addr64”: “14b457fffe26538a”,
“addr16”: “6741”,
“activeEndpoints”: {
“1”: {
“profileId”: “0104”,
“deviceId”: “0101”,
“deviceVersion”: 1,
“inputClusters”: [
“0000”,
“0003”,
“0004”,
“0005”,
“0006”,
“0008”,
“1000”
],
“outputClusters”: [
“0005”,
“0019”,
“0020”,
“1000”
],
“classifierAttributesPopulated”: true
},
“242”: {
“profileId”: “a1e0”,
“deviceId”: “0061”,
“deviceVersion”: 0,
“inputClusters”: [
“0021”
],
“outputClusters”: [
“0021”
],
“classifierAttributesPopulated”: true
}
},
“properties”: {
“level”: {
“name”: “level”,
“value”: 100,
“visible”: true,
“title”: “Brightness”,
“type”: “number”,
@type”: “BrightnessProperty”,
“unit”: “percent”,
“minimum”: 0,
“maximum”: 100,
“profileId”: 260,
“endpoint”: 1,
“clusterId”: 8,
“attr”: “currentLevel”,
“attrId”: 0,
“fireAndForget”: false,
“bindNeeded”: false,
“configReportNeeded”: false,
“initialReadNeeded”: false,
“level”: 254
},
“on”: {
“name”: “on”,
“value”: false,
“visible”: true,
“title”: “On/Off”,
“type”: “boolean”,
@type”: “OnOffProperty”,
“profileId”: 260,
“endpoint”: 1,
“clusterId”: 6,
“attr”: “onOff”,
“attrId”: 0,
“fireAndForget”: false,
“bindNeeded”: false,
“configReportNeeded”: false,
“initialReadNeeded”: false
}
},
“name”: “zb-14b457fffe26538a-undefined”,
@type”: [
“Light”,
“OnOffSwitch”
],
“defaultName”: “zb-14b457fffe26538a-undefined”,
“extendedTimeout”: true,
“activeEndpointsPopulated”: true,
“nodeInfoEndpointsPopulated”: true,
“modelId”: “TRADFRI bulb E26 WW 806lm”,
“powerSource”: 1
}