Philips Wiz Tunable White smart lightbulbs - Having trouble with a paired bulb that just flashes white? See how I fixed it, and maybe learn more about the insides of them.

Just a heads up: This is mostly technobabble - if you don't know wtf any of this means, the TL;DR is: I think there's a design/cost-cutting flaw in these bulbs. So if you're within a return/warranty window, just return/exchange/RMA it! But if not, or are curious about what it is, feel free to read on.