Drawings tools disappearing

Hi, 

My cTrader just got updated to Ver 3.5, thought the long-awaited problem will be fixed but it is still there. 

Before backtesting starts if I use trend line/horizontal lines, rectangles or any drawing tool, it gets disappear when starting the backtesting with or without visual mode. 

This problem starts after the major update of cTrader with a visual model backtesting before there was no such problem. 

Now after backtest I have to draw lines or drawing again and again, so can you please fix so that the lines or levels can remain on the chart even after backtesting finished for better analysis. 

Regards, 

Rahat Ali