From @TobiasBengtsson here:

I am facing the same issue when checking the logs in Application Insights.

I know that 901 actual requests were sent to the Function HTTP endpoint.

The Kusto query in Application Insights traces | where operation_Name == "MyHttpTriggerFunction" | where message startswith "Executing" | count returns 911 responses. I've tracked down 10 duplicates that have the exact same timestamp, Id and operation_Id.

Even worse, under Home > App Services > MyFunction - MyHttpTriggerFunction, under the "Monitor" tab, I see 961 executions.

I'm worried that we'll have to pay for the higher amount of shown executions which would be a 7% extra cost compared to reality.

(The names of the app and function are fictitious)