This is NOT happening to us (we don't control lights), but these 5 threads seem related:
This is a currently known issue. Some are reporting that all is working well now for them. Our Community team apologizes for the inconvenience and suggests to try again later.
Hopefully a quick fix is out for all-
Thanks for visiting the Community forum.
@ʇɹnʞ, I'm checking in to make sure everything's working well for you. I believe you should have no trouble controlling your lights now since a fix was already sent over-the-air. If you still encounter some concerns, please let me know so we can address them right away.