Hover Effect Error

Hello Forextester team, you have a amazing product here.. thank you.

Sometimes When I hover over objects in certain projects, they disappear, for some when an object is selected it also disappears and reappears when it is deselected.

In some scenrios, when I move the chart, some objects and order history also disappear, making it difficult to backtest efficiently, i constantly have to keep moving the chart around to look for a suitable placement