Bug (Case 1326407) Nested Objects Draw Gizmos twice

Issue originally reported on 2020.2.3. But exists also in 2021.2

Nested objects draw gizmos twice when using the DrawGizmo attribute and GizmoType.InSelectionHierarchy type:

Code (CSharp):

1. [DrawGizmo(GizmoType.InSelectionHierarchy, typeof(Anchor))]
2. static void DrawAnchorGizmos(Anchor anchor, GizmoType gizmoType) {
3.  
4.     Vector3 position = anchor.transform.position;
5.  
6.     Color gizmoColor = Color.blue;
7.     gizmoColor.a = 0.025f;
8.  
9.     using (new Handles.DrawingScope(gizmoColor)) {
10.  
11.         Handles.DrawSolidDisc(position, Vector3.forward, anchor.connectionRadius);
12.     }
13.  
14.     gizmoColor = Color.green;
15.     gizmoColor.a = 0.1f;
16.  
17.     using (new Handles.DrawingScope(gizmoColor)) {
18.  
19.         Handles.DrawSolidDisc(position, Vector3.forward, anchor.radius);
20.     }
21. }

Unless I'm mistaken, this seems like a bug.

 

I'm running into this same issue in 2020.3.18f1. Just wondering if there is/will be a back-port to 2020.3.x @LeonhardP?

Thanks,
Joe