Ionic Push send twice

Frequently, but not always, single calls to the Ionic Push API will result in two push notifications. The second is typically a couple of minutes later. I am only posting the request once from my end, I’ve made certain of that. Is anyone else experiencing this? It’s not the worst problem in the world, but it can be annoying for our users. This appears to be happening on iOS and Android indiscriminately and there seems to be no rhyme or reason to one being sent rather than two.

alpha or beta API?
How are you creating the request to the API?