CommandBuffer: temporary render texture not found while executing

Unity Engine
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1

Upgraded a Unity project from 2022 LTS to Unity 6 and get these warnings all the time as I click around the Project - even on a new scene (so not scene related).
What is it?

CommandBuffer: temporary render texture  not found while executing (Copy source)
CommandBuffer: temporary render texture  not found while executing (Copy destination)

CommandBuffer: temporary render texture  not found while executing  (Copy destination)
UnityEngine.Debug:ExtractStackTraceNoAlloc (byte*,int,string)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
UnityEngine.Rendering.ScriptableRenderContext:Submit ()
UnityEngine.Rendering.Universal.UniversalRenderPipeline:RenderSingleCamera (UnityEngine.Rendering.ScriptableRenderContext,UnityEngine.Rendering.Universal.UniversalCameraData) (at ./Library/PackageCache/com.unity.render-pipelines.universal@15fef0f41df6/Runtime/UniversalRenderPipeline.cs:887)
UnityEngine.Rendering.Universal.UniversalRenderPipeline:RenderSingleCameraInternal (UnityEngine.Rendering.ScriptableRenderContext,UnityEngine.Camera,UnityEngine.Rendering.Universal.UniversalAdditionalCameraData&) (at ./Library/PackageCache/com.unity.render-pipelines.universal@15fef0f41df6/Runtime/UniversalRenderPipeline.cs:690)
UnityEngine.Rendering.Universal.UniversalRenderPipeline:RenderSingleCameraInternal (UnityEngine.Rendering.ScriptableRenderContext,UnityEngine.Camera) (at ./Library/PackageCache/com.unity.render-pipelines.universal@15fef0f41df6/Runtime/UniversalRenderPipeline.cs:665)
UnityEngine.Rendering.Universal.UniversalRenderPipeline:Render (UnityEngine.Rendering.ScriptableRenderContext,System.Collections.Generic.List`1<UnityEngine.Camera>) (at ./Library/PackageCache/com.unity.render-pipelines.universal@15fef0f41df6/Runtime/UniversalRenderPipeline.cs:482)
UnityEngine.Rendering.RenderPipeline:InternalRender (UnityEngine.Rendering.ScriptableRenderContext,System.Collections.Generic.List`1<UnityEngine.Camera>)
UnityEngine.Rendering.RenderPipelineManager:DoRenderLoop_Internal (UnityEngine.Rendering.RenderPipelineAsset,intptr,UnityEngine.Object,Unity.Collections.LowLevel.Unsafe.AtomicSafetyHandle)
UnityEditor.Handles:Internal_DrawCameraWithGrid (UnityEngine.Camera,UnityEditor.DrawCameraMode,UnityEditor.DrawGridParameters&,bool,bool)
UnityEditor.Handles:DrawCameraImpl (UnityEngine.Rect,UnityEngine.Camera,UnityEditor.DrawCameraMode,bool,UnityEditor.DrawGridParameters,bool,bool,bool,UnityEngine.GameObject[])
UnityEditor.Handles:DrawCameraStep1 (UnityEngine.Rect,UnityEngine.Camera,UnityEditor.DrawCameraMode,UnityEditor.DrawGridParameters,bool,bool)
UnityEditor.SceneView:DoDrawCamera (UnityEngine.Rect,UnityEngine.Rect,bool&)
UnityEditor.SceneView:DoOnGUI ()
UnityEditor.SceneView:OnSceneGUI ()
UnityEngine.UIElements.IMGUIContainer:DoOnGUI (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,bool,UnityEngine.Rect,System.Action,bool)
UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent (UnityEngine.Event,UnityEngine.Matrix4x4,UnityEngine.Rect,System.Action,bool)
UnityEngine.UIElements.IMGUIContainer:DoIMGUIRepaint ()
UnityEngine.UIElements.UIR.RenderChainCommand:ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams,single,System.Exception&)
UnityEngine.UIElements.UIR.UIRenderDevice:EvaluateChain (UnityEngine.UIElements.UIR.RenderChainCommand,UnityEngine.Material,UnityEngine.Material,UnityEngine.Texture,UnityEngine.Texture,single,System.Exception&)
UnityEngine.UIElements.UIR.RenderChain:Render ()
UnityEngine.UIElements.UIRRepaintUpdater:Render ()
UnityEngine.UIElements.BaseVisualElementPanel:Render ()
UnityEngine.UIElements.Panel:Render ()
UnityEditor.UIElements.EditorPanel:Render ()
UnityEngine.UIElements.UIElementsUtility:DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel)
UnityEngine.UIElements.UIElementsUtility:UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (int,intptr,bool&)
UnityEngine.UIElements.UIEventRegistration:ProcessEvent (int,intptr)
UnityEngine.UIElements.UIEventRegistration/<>c:<.cctor>b__1_2 (int,intptr)
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

[./Library/PackageCache/com.unity.render-pipelines.universal@15fef0f41df6/Runtime/UniversalRenderPipeline.cs line 887]
2

Getting in worker threads too which are importing fbx assets

Starting new worker id: 2 with log in ...AssetImportWorker2.log
[Worker0] Start importing Packages/com.unity.render-pipelines.core/Editor/Resources/DebugProbe.fbx using Guid(9e1c97fc44f9a8744b61b58f72c56de4) Importer(815301076,1909f56bfc062723c751e8b465ee728b) 
[Worker0] (PreviewImporter)
Starting new worker id: 3 with log in ...AssetImportWorker3.log
Starting new worker id: 4 with log in ...AssetImportWorker4.log
[Worker1] Start importing Assets/GenericAssets/Doors/door_0_034.fbx using Guid(e341a755f0a48ee44ba775e7a10e17aa) Importer(815301076,1909f56bfc062723c751e8b465ee728b) 
[Worker1] (PreviewImporter)
[Worker1] CommandBuffer: temporary render texture  not found while executing  (Copy source)
[Worker1] CommandBuffer: temporary render texture  not found while executing  (Copy destination)
[Worker0]  -> (artifact id: '32cca3d9e639b3ea02510d4bdb27e7e8') in 0.868282 seconds
[Worker0] Start importing Assets/GenericAssets/Doors/door_8_029.fbx using Guid(784a97cf9c3ce35498da5925baa141e9) Importer(815301076,1909f56bfc062723c751e8b465ee728b)
3

Hi, andyz. Please report a bug via the Bug Reporter (“Help → Report a Bug…” in the Unity Editor). Make sure to attach the problematic project, too. We’ll then take a closer look into this. Cheers!