When multiple HLODs are set, the transition does not occur correctly

The [bIsVisible] flag is set to [1] by the following judgment.

const bool bIsInDrawRange = DistanceSquared >= Bounds.MinDrawDistanceSq * HLODState.FOVDistanceScaleSq;

Judging from this code, I believe that HLOD cannot be layered.
When multiple HLODs are layered, both ForcedVisiblePrimitiveMap and ForcedHiddenPrimitiveMap are [true].

I would be very happy if you could tell me if this is a fix or a specification.

1. Place Cone, Cube, Sphere, and Cylinder in the scene.
2. Make LODActor_0 from Cone and Cube.
Make LODActor_1 from Sphere and Cylinder.
Include them in LODLevel-0.
3. Create LOD_Actor2 from LODActor_0 and LODActor_1 created in [2].
Include it in LODLevel-1.
4. Run GenerateProxyMeshes.
5. Transition to LODLevel-0 is done correctly.
However, when transitioning to LODLevel-1, LODLevel-0 will be displayed at the same time.
(To make it easier to check, the coordinates of StaticMeshComponent of LODActor are shifted.)

You can check the above situation immediately by opening TestMap.umap.