market data problems

[Diqingling]

I tried to use the following code to subscribe to the latest market data each time the 5-min MGC K-bar updates:

class Strategy:
    def __init__(self, trading_suite: TradingSuite, symbol: str):
        self.suite = trading_suite
        self.data_manager = trading_suite[symbol].data
    
    async def _on_new_bar(self, event: Any):
        await self._calculate_and_trade()
    
     async def _calculate_and_trade_macd(self):
        current_data = await self.data_manager.get_data("5min")
        print(current_data)

async def main():
    suite = await TradingSuite.create(
    "MGC",
    timeframes=["5min"],
    initial_days=3,
    )
    strategy = Strategy(suite, "MGC")

if __name__ == "__main__":
    asyncio.run(main())

but it seems that every piece of K-bar data obtained after the program starts executing is inaccurate(circled in the picture), while the data before the program executing is accurate:

Is my use of event mechanism incorrect? Is there any way to solve it?