I've been using the Notifications API for months without issue, however today I am getting user reports of the notification speech being issued twice within one notification. I also observed this behavior today as I'm a user of the same skill. The skill code has not changed and I've checked the JSON structure correspond to the Amazon API docs. All that is fine, so I must conclude that something has changed within the Amazon notifications service which is causing the repeated speech.
Anyone else observing this ?