SetDefaultNodeHeight in loading a invisible virtual tree view visible

[chinawsb]

procedure TBaseVirtualTree.SetDefaultNodeHeight(Value: TDimension);
begin
if Value = 0 then
Value := cInitialDefaultNodeHeight;
if FDefaultNodeHeight <> Value then
begin
==>This line should check csLoading in ComponentState to avoid this problem
if (Parent <> nil) and (toAutoChangeScale in TreeOptions.AutoOptions) then
HandleNeeded(); // Create window handle and font proactively to prevent any unintended rescaling in AutoChnageScale(). See issue #1341#1366

[joachimmarder]

If you feel you found a bug, please respect our guidelines on the project homepage for submitting bugs. Please include your version of Virtual TreeView and Delphi and attach a sample compiling project as ZIP to your report that allows to replicate the problem. If only small changes are required, a description is sufficient how a demo projects needs to be changed in order to replicate the bug. If you already have a solution, please supply a patch file or create a pull request.

This line should check csLoading in ComponentState to avoid this problem

Can you please explain why this is needed?