HttpWebhook retries when retry policy is none

Question

I have a logic app with a HttpWebhook action with retry policy set to none. But the action still seems to sometimes retry sending its outbound post request, see pictures. I would instead want it to just fail on the first error and never do any retries. Is there a way to configure the logic app to do this? I'd hoped that the retry policy = none would be enough, but it seems like this is not the case? Or am I reading this wrong somehow?

(More background: this webhook is calling our own function app process that may take a long time to complete, and that calls the webhook back once it's done. The reason we'd prefer no retries is because in this example case, the first call had gotten far enough to send data to the receiving system on the other end, and the retry resulted in them receiving duplicate data, which we would like to avoid.)