I’ve had ST recognizing my hue bridge and all lights for some time now. No issues. Recently I purchased 6 white Hue bulbs. All 6 connected easily to the hue bridge. Alexa recognized all 6 when I clicked add device. For some reason, ST only saw 4 of the six bulbs. I currently have all 6 turned on, I’ve even tried having turning them on and off through hue–thinking maybe ST would see the activity, but nothing. I’ve tried the “add a thing” from the app. No luck even after ten minutes. I’ve tried to manually add the bulbs with the ST app, but that just seems to take me back to the the same screen as the standard “add a thing”.
All 6 of these are A19 hue white bulbs (not white ambiance). While that is an option under light bulbs, when you click that, there is a picture of a hue white ambiance bulb (flat top) not an A19 bulb. For giggles, I’ve also tried the option for “hue white ambiance A19”, but of course that didn’t work either.