This looks like throttlebody self calibration after fuel return line got stuck with too much petrol before engine shut down previously. Does it happen all the time? If it's an isolated case(happen once in a blue moon), can just ignore it. If you're still under warranty, get SC to look into it. If woranti sudah koyaked, get it scan to see if there's fault code in the ECU. If not, try Techron since can flush fuel system.