I have 11 of these bulbs working perfectly, including 2 of the Daylight bulbs. They’re included in Routines, used via Smart Lighting automations, and controlled using Aeon minimotes.
To check to see how these are doing, look at your hub’s event log in the IDE. Look at the Last Activity column. It’s sorted from longest to shorted activity duration. A healthy bulb (not physically turned off) should look like this:
Those 2 bulbs in the red circle on the left are in lamps that sometimes will be used manually. In this situation and screenshot, the physical switch on the lamp is ON, but the bulb is OFF in ST. They’re not heavily used lamps, and they stay in that state pretty much all the time. If you look at the red circle to the right you can see that ST last contacted the bulb (polled) about 8 minutes ago.
That’s how you can see if your bulbs are behaving correctly in your ST environment, as well as any other zigbee device. In the same image you can see a wall outlet. There’s nothing plugged into it, and the only thing it does is act as a zigbee repeater. It also polled and was “awake” 8 minutes ago.
So how can you tell if a zigbee device craps out on you? Easy - if your zigbee device goes 2 or more hours within the “Last Activity” column, you have a problem.
I have a ton, and I mean a ton of zigbee devices, and all 95 of mine have last activity within an hour. As soon as one starts to drift into the 2 hour range, I investigate. Almost always it’s a range related issue, or interference with something. In fact, I can say with decent certainty that any issue I’ve had was range related. That’s why I’ve added the Iris smart plugs in key areas of my house, and with the $12.60 deal, I just bought more for the rest of the rooms in my house.
Referencing @JDRoberts’s post above mine, I don’t use any polling SmartApp, but I know some people do. I also have a “wellness check” app for when I don’t have the IDE super handy to use.