Changing Candle Prices on Kite Chart

Saheb
Candle close prices are changing for Banknifty, Nifty, Finnifty option scrips for a particular time.
For Example, at 9:20am the candle close price of NIFTY 19800CE is 20.40 but when I refresh the chart, the close price changes to 20.55.
The above issue is observed across all strikes and major indices.
I am observing this error since last 7 days.
Kindly look into the issue and resolve it asap.
Thanks
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