Converting UGUI RectTransform to RectTransform component

Unity Engine
,
1

According to samples, I should write something like this in order to convert UnityEngine.RectTransform to my RectTransform component.

public class RectTransformConversion : GameObjectConversionSystem
{
    protected override void OnUpdate()
    {
        Entities.ForEach((UnityEngine.RectTransform transform) =>
        {
            Entity entity = GetPrimaryEntity(transform);

            var component = new RectTransform
            {
                Pivot = transform.pivot,
                AnchorMin = transform.anchorMin,
                AnchorMax = transform.anchorMax,
                SizeDelta = transform.sizeDelta,
                Position = (Vector2) transform.localPosition
            };

            DstEntityManager.AddComponentData(entity, component);
        });
    }
}

But when I start the game, I get this error:
Error

IndexOutOfRangeException: Index was outside the bounds of the array.
Unity.Entities.ArchetypeChunkComponentObjects1[T].get_Item (System.Int32 index) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/Iterators/ArchetypeChunkArray.cs:630) Unity.Entities.EntityQueryBuilder.ForEach[T0] (Unity.Entities.EntityQueryBuilder+F_C1[T0] action) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities/EntityQueryBuilder_ForEach.gen.cs:192)
GameObjectConversionMappingSystem.CreatePrimaryEntities () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/GameObjectConversion/GameObjectConversionMappingSystem.cs:240)
Unity.Entities.GameObjectConversionUtility.Convert (Unity.Entities.World gameObjectWorld, Unity.Entities.World dstEntityWorld) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/GameObjectConversion/GameObjectConversionUtility.cs:135)
Unity.Entities.ConvertToEntity.ConvertHierarchy (UnityEngine.GameObject root) (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/ConvertToEntity.cs:90)
Unity.Entities.ConvertToEntity.Awake () (at Library/PackageCache/com.unity.entities@0.0.12-preview.33/Unity.Entities.Hybrid/ConvertToEntity.cs:30)

What’s the problem?

2

Its a known issue related to specifically RectTransform. Should be addressed in next entities update.