Reproduction:
1) Open any project using hdrp master
2) Create a volume
3) Select the volume in the assets folder (important)
4) Try adding any volume

An error will pop up and no volume override will be added

Note: Strangely a workaround is to first add the volume on a gameobject and then try to add overrides (first part of the video).

The error message:
NullReferenceException: SerializedObject of SerializedProperty has been Disposed.
UnityEditor.SerializedProperty.CopyInternal () (at C:/buildslave/unity/build/Editor/Mono/SerializedProperty.bindings.cs:1457)
UnityEditor.SerializedProperty.Copy () (at C:/buildslave/unity/build/Editor/Mono/SerializedProperty.bindings.cs:198)
UnityEditor.Rendering.VolumeComponentListEditor.CreateEditor (UnityEngine.Rendering.VolumeComponent component, UnityEditor.SerializedProperty property, System.Int32 index, System.Boolean forceOpen) (at D:/Git/Graphics/com.unity.render-pipelines.core/Editor/Volume/VolumeComponentListEditor.cs:154)
UnityEditor.Rendering.VolumeComponentListEditor.AddComponent (System.Type type) (at D:/Git/Graphics/com.unity.render-pipelines.core/Editor/Volume/VolumeComponentListEditor.cs:366)
UnityEditor.Rendering.VolumeComponentProvider.GoToChild (UnityEditor.Rendering.FilterWindow+Element element, System.Boolean addIfComponent) (at D:/Git/Graphics/com.unity.render-pipelines.core/Editor/Volume/VolumeComponentProvider.cs:101)
UnityEditor.Rendering.FilterWindow.GoToChild (UnityEditor.Rendering.FilterWindow+Element e, System.Boolean addIfComponent) (at D:/Git/Graphics/com.unity.render-pipelines.core/Editor/FilterWindow.cs:645)
UnityEditor.Rendering.FilterWindow.HandleKeyboard () (at D:/Git/Graphics/com.unity.render-pipelines.core/Editor/FilterWindow.cs:461)
UnityEditor.Rendering.FilterWindow.OnGUI () (at D:/Git/Graphics/com.unity.render-pipelines.core/Editor/FilterWindow.cs:371)
UnityEditor.HostView.OldOnGUI () (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:258)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/IMGUIContainer.cs:366)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Action onGUIHandler, System.Boolean canAffectFocus) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/IMGUIContainer.cs:676)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Action onGUIHandler, System.Boolean canAffectFocus) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/IMGUIContainer.cs:648)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Boolean canAffectFocus) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/IMGUIContainer.cs:641)
UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUIRaw (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/IMGUIContainer.cs:607)
UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUI (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/IMGUIContainer.cs:596)
UnityEngine.UIElements.KeyboardEventDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/Events/KeyboardEventDispatchingStrategy.cs:21)
UnityEngine.UIElements.EventDispatcher.ApplyDispatchingStrategies (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, System.Boolean imguiEventIsInitiallyUsed) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/EventDispatcher.cs:377)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/EventDispatcher.cs:340)
UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/EventDispatcher.cs:218)
UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/Panel.cs:401)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/UIElementsUtility.cs:466)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/UIElementsUtility.cs:209)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/UIElementsUtility.cs:74)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at C:/buildslave/unity/build/External/MirroredPackageSources/com.unity.ui/Core/UIElementsUtility.cs:28)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:189)