We are facing issue in Azure Service Bus topic trigger 8.0 isolation runtime when we add IsSessionEnabled=false. process the message but after process all message to goes idle and not pick other service bus message automatically

public async Task Run(
[ServiceBusTrigger(“topic”, “subscription”, Connection = “TopicConnectionString”,AutoCompleteMessages =false,IsBatched =true,IsSessionEnabled=false)]
ServiceBusReceivedMessage[] messages,
ServiceBusMessageActions messageActions)
{
// message processing

// we are concatenating message to blob storage csv file.
}

We want is process all message automatically on regular basis.