Rhino8 Toolbar GroupCount 0

Hi.

I am developing using C#.

C# Code
var toolbar = Rhino.RhinoApp.ToolbarFiles.FindByName(“default”, true);

[image - groups exists.]
image

Groupcount result is 0. so I can’t use visible of group.
Toolbarcount result is ok.

I want to use visible option of toolbar.

please check this issue.
thank you.