The PlayFabMultiplayerManager.UpdateNetworkId method doesn't use the networkDescriptor parameter but instead is using the _networkDescriptor member variable. Most the code calling this wasn't impacted because it was passing in _networkDescriptor but PARTY_STATE_CHANGE_TYPE_NETWORK_DESCRIPTOR_CHANGED is broken.
The PlayFabMultiplayerManager.UpdateNetworkId method doesn't use the networkDescriptor parameter but instead is using the _networkDescriptor member variable. Most the code calling this wasn't impacted because it was passing in _networkDescriptor but PARTY_STATE_CHANGE_TYPE_NETWORK_DESCRIPTOR_CHANGED is broken.