fix: NetworkBehaviour inspector view exceptions when using a distributed authority network topology

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -6,7 +6,20 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 Additional documentation and release notes are available at [Multiplayer Documentation](https://docs-multiplayer.unity3d.com).
 
-## [Unreleased]
+## [Unrelease]
+
+### Added
+
+
+### Fixed
+
+- Fixed issue where viewing a `NetworkBehaviour` with one or more `NetworkVariable` fields could throw an exception if running a distributed authority network topology with a local (DAHost) host and viewed on the host when the host is not the authority of the associated `NetworkObject`. (#3578)
+- Fixed issue when using a distributed authority network topology and  viewing a `NetworkBehaviour` with one or more `NetworkVariable` fields in the inspector view would not show editable fields. (#3578)
+
+### Changed
+
+
+## [2.5.0] 2025-08-01
 
 ### Added
 

com.unity.netcode.gameobjects/Runtime/Core/NetworkBehaviour.cs

@@ -529,11 +529,21 @@ public bool IsSessionOwner
 
         internal bool IsBehaviourEditable()
         {
+            if (!m_NetworkObject)
+            {
+                return true;
+            }
+
+            if (!m_NetworkObject.NetworkManager)
+            {
+                return true;
+            }
+
+            var networkManager = m_NetworkObject.NetworkManager;
+
             // Only server can MODIFY. So allow modification if network is either not running or we are server
-            return !m_NetworkObject ||
-                m_NetworkObject.NetworkManager == null ||
-                m_NetworkObject.NetworkManager.IsListening == false ||
-                m_NetworkObject.NetworkManager.IsServer;
+            return    !networkManager.IsListening ||
+                ((networkManager.DistributedAuthorityMode && m_NetworkObject.IsOwner) || (!networkManager.DistributedAuthorityMode && networkManager.IsServer));
         }
 
         //  TODO: this needs an overhaul.  It's expensive, it's ja little naive in how it looks for networkObject in