Only first NetworkTransform synchs when having multiple nested NetworkTransforms on NetworkObject

[mixedHans]

Description

I have a player object as well as some multiple network object, that rely on having multiple nested network transforms. A network object can look like this:

• NetworkObject
  • Nested NetworkTransform1
  • Nested NetworkTransform2

When spawning it either as player object as well as normal network object, only the very first NetworkTransform (in my case NetworkTransform1) gets synchronized between every client. When i change the hierarchy to this below, then NetworkTransform2 gets synched.

• NetworkObject
  • Nested NetworkTransform2
  • Nested NetworkTransform1

Reproduce Steps

1. Create a NetworkObject with at least 2 nested NetworkTransforms
2. Start 2 instances of the application (Server and client)
3. Join the same session
4. Spawn this NetworkObject
5. Move both objects with a NetworkTransform component on it to another location

Actual Outcome

As owner of the object, both objects move accordingly. As not owner of the objects, only the first NetworkTransform in the hierarchy moves. The other NetworkTransform stays in the place where it has been spawned.

Expected Outcome

Both NetworkTransforms move and synch over all clients.

Environment

• OS: Windows11
• Unity Version: 6000.0.13f
• Netcode Version: 2.0.0-pre.3

Additional Context

I also recognized during debugging, that NetworkObject.NetworkTransforms is null. I dont know why this happens, but i found that if (type.IsInstanceOfType(typeof(NetworkTransform)) || type.IsSubclassOf(typeof(NetworkTransform))) is always false, even when the type is NetworkTransform.

CodeSnipped from NetworkObject class

    m_ChildNetworkBehaviours = new List<NetworkBehaviour>();
    var networkBehaviours = GetComponentsInChildren<NetworkBehaviour>(true);
    for (int i = 0; i < networkBehaviours.Length; i++)
    {
        if (networkBehaviours[i].NetworkObject == this)
        {
            m_ChildNetworkBehaviours.Add(networkBehaviours[i]);
            var type = networkBehaviours[i].GetType();
            if (type.IsInstanceOfType(typeof(NetworkTransform)) || type.IsSubclassOf(typeof(NetworkTransform)))
            {
                if (NetworkTransforms == null)
                {
                    NetworkTransforms = new List<NetworkTransform>();
                }
                NetworkTransforms.Add(networkBehaviours[i] as NetworkTransform);
            }
#if COM_UNITY_MODULES_PHYSICS
            else if (type.IsSubclassOf(typeof(NetworkRigidbodyBase)))
            {
                if (NetworkRigidbodies == null)
                {
                    NetworkRigidbodies = new List<NetworkRigidbodyBase>();
                }
                NetworkRigidbodies.Add(networkBehaviours[i] as NetworkRigidbodyBase);
            }
#endif
        }
    }

[mixedHans]

This issue has been solved within version 2.0.0-pre.4