Konopka Control: rzGroupBar navigation issue

I am using the latest version of Delphi Tokyo 10.2.2 with Konopka Controls 6.2.3.

At run time, the RZGroupBar component always scrolls to the bottom, displaying the last few rzGroup items. This issue occurs when the vertical screen size is smaller than the length (height) of the rzGroupBar control.

I have been using the old version of Raize controls 4.1.2 in Delphi 7 for many years and there was never a problem with the above undesired scrolling to the bottom of the rzGroupBar control.

I want the top rzGroup item to be always displayed first at run time, not the bottom ones.

Is there a way to fix this issue in code somehow or is it a component bug that needs to be addressed by Konopka Development Team ? 

Please advise.