Bug If NetworkList is updated immediately after Spawn, NetworkList is not synchronized with the client.

Hi.
If I spawn a NetworkBehaviour with a NetworkList while the client is connected, the NetworkList does not seem to be synchronized with the client.

this is reproduction project.
https://github.com/chromee/netcode-networklist-test

The following two scripts are important.
https://github.com/chromee/netcode-.../Assets/Scripts/NetworkListHolderGenerator.cs
https://github.com/chromee/netcode-networklist-test/blob/master/Assets/Scripts/NetworkListHolder.cs

NetworkListHolder is a NetworkBehaviour with a NetworkList.

The NetworkListHolderGenerator spawn a NetworkObject to which the NetworkListHolder is attached and then updates the NetworkList.
I prepared three patterns for the timing of updating.

1. before spawn
2. after spawn
3. 1 second after spawn

In patterns 1 and 2, the NetworkList will not be synced to the client.
Only in pattern 3 the NetworkList is synced to the client.

If I replace NetworkList with NetworkVariable in this reproduction project, all patterns are synchronized to the client I would like NetworkList to have the same behavior.

 

I noticed something similar after updating from pre7 to pre10. I've created a Github issue for it here: https://github.com/Unity-Technologies/com.unity.netcode.gameobjects/issues/2062