This is the way Heikin Ashi charts work.
The Heikin Ashi real-time price according to their calculation is not the actual real-time price as in the candlestick charts.
In the desktop platform there is an additional setting that allows you to set the real-time price of the Hekin Ashi to be the actual one and this setting is named "Show original OHLC". In the mobile platform there is a setting in More > Settings, to show original OHLC on Heikin Ashi charts.
This also allows you to see the actual OHLC when using the data values on the cross hair (in Trade Interceptor Desktop) instead of those of the Heikin Ashi.