Steps to reproduce:
# Create a 3D project
# Add 3D Object -> Cube -
# Window -> Search -> New Window
# Verify that the "Search" window opens
# Enter the search string "Cube"
# Save search results to the "Project" list (diskette -> Save Project)
# Leave the default name (it should be Cube) and click "Save"
# Verify that the "Cube" query is selected in the "Project" list
# Close the "Search" window
# Go to "Project" -> "Assets" and find your saved query and select it
# Verify, that query data becomes displayed in the "Inspector" tab
# In the "Inspector" section find the "Project" tab and open it
# Verify, that your saved query asset should be displayed
# Double-click on it
# Observe the "Console" window

Expected result: Selected item should be shown. No errors in the "Console" window.

Actual result: The selected item is shown but we get an error simultaneously in the "Console" window. Added screenshot in the "Attachments" section.

Reproducible with:  2023.1.0a15, 2023.1.0b13, 2023.2.0a12.

Not reproducible with: -

Cannot test with: 2020.3.46f1, 2021.3.22f1, 2022.2.16f1, 2023.1.0a14 these streams have no this functionality.

Error: NullReferenceException: Object reference not set to an instance of an object
UnityEditor.Search.SearchView.ExecuteAction (UnityEditor.Search.SearchAction action, UnityEditor.Search.SearchItem[] items, System.Boolean endSearch) (at /Users/bokken/build/output/unity/unity/Modules/QuickSearch/Editor/UITK/SearchView.cs:569)
UnityEditor.Search.SearchBaseCollectionView`1[T].OnItemsChosen (System.Collections.Generic.IEnumerable`1[T] chosenItems) (at /Users/bokken/build/output/unity/unity/Modules/QuickSearch/Editor/UITK/SearchBaseCollectionView.cs:74)
UnityEngine.UIElements.BaseVerticalCollectionView.DoSelect (UnityEngine.Vector2 localPosition, System.Int32 clickCount, System.Boolean actionKey, System.Boolean shiftKey) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Controls/BaseVerticalCollectionView.cs:1408)
UnityEngine.UIElements.BaseVerticalCollectionView.ProcessPointerDown (UnityEngine.UIElements.IPointerEvent evt) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Controls/BaseVerticalCollectionView.cs:1317)
UnityEngine.UIElements.BaseVerticalCollectionView.OnPointerDown (UnityEngine.UIElements.PointerDownEvent evt) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Controls/BaseVerticalCollectionView.cs:1265)
UnityEngine.UIElements.EventCallbackFunctor`1[TEventType].Invoke (UnityEngine.UIElements.EventBase evt) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/EventCallback.cs:67)
UnityEngine.UIElements.EventCallbackRegistry+DynamicCallbackList.Invoke (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.VisualElement target) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/EventCallbackRegistry.cs:206)
UnityEngine.UIElements.EventCallbackRegistry.InvokeCallbacks (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.VisualElement target, UnityEngine.UIElements.CallbackPhase phase) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/EventCallbackRegistry.cs:321)
UnityEngine.UIElements.EventDispatchUtilities.HandleEventAcrossPropagationPath (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.VisualElement leafTarget, UnityEngine.UIElements.PropagationPaths path) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/EventDispatchUtilities.cs:209)
UnityEngine.UIElements.EventDispatchUtilities.PropagateEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.VisualElement target) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/EventDispatchUtilities.cs:80)
UnityEngine.UIElements.EventDispatchUtilities.DispatchToElementUnderPointerOrPanelRoot (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, System.Int32 pointerId, UnityEngine.Vector2 position) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/EventDispatchUtilities.cs:320)
UnityEngine.UIElements.EventDispatchUtilities.DispatchToCapturingElementOrElementUnderPointer (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, System.Int32 pointerId, UnityEngine.Vector2 position) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/EventDispatchUtilities.cs:362)
UnityEngine.UIElements.PointerEventBase`1[T].Dispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Events/PointerEvents.cs:1024)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/EventDispatcher.cs:336)
UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/EventDispatcher.cs:200)
UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/Panel.cs:479)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:477)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:205)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:74)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:28)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at /Users/bokken/build/output/unity/unity/Modules/IMGUI/GUIUtility.cs:197)