Indicator subwindow not displaying during visual backtest in MT5

[Matthieu Jean Baptiste Wambergue]

Hello,

I’ve developed a custom MQL5 indicator that opens a subwindow to display the RSI under the main chart. It works perfectly on live charts, but during a visual backtest in the MT5 Strategy Tester, the subwindow does not appear.

Is there a specific limitation with subwindow indicators during visual backtesting?

Any help would be greatly appreciated!