[HDRP] Fixed lookdev reload bug when viewing a scene object

com.unity.render-pipelines.core/Editor/LookDev/LookDev.cs

@@ -129,7 +129,10 @@ internal static void Initialize(DisplayWindow window)
             s_ViewDisplayer = window;
             s_EnvironmentDisplayer = window;
             open = true;
-            ConfigureLookDev(reloadWithTemporaryID: false);
+
+            // Lookdev Initialize can be called when the window is re-created by the editor layout system.
+            // In that case, the current context won't be null and there might be objects to reload from the temp ID
+            ConfigureLookDev(reloadWithTemporaryID: s_CurrentContext != null);
         }
 
         [Callbacks.DidReloadScripts]
@@ -188,10 +191,6 @@ static void LinkViewDisplayer()
                 s_ViewDisplayer = null;
                 //currentContext = null;
 
-                //release editorInstanceIDs
-                currentContext.GetViewContent(ViewIndex.First).CleanTemporaryObjectIndexes();
-                currentContext.GetViewContent(ViewIndex.Second).CleanTemporaryObjectIndexes();
-
                 SaveConfig();
 
                 open = false;

com.unity.render-pipelines.high-definition/CHANGELOG.md

@@ -69,6 +69,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed box light attenuation.
 - Fixed compilation issues on platforms that don't support XR.
 - Fixed issue with compute shader stripping for probe volumes variants.
+- Fixed a reload bug when using objects from the scene in the lookdev (case 1300916).
 
 ### Changed
 - Removed the material pass probe volumes evaluation mode.