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Fixed in 2023.2.0b17, 2023.3.0a12

Under Consideration for 2024.1.X



Found in


Issue ID




NullReferenceException is thrown when clicking "Show in Explorer" on elements in the folder structure in the Project window



How to reproduce:
1. Create a new Unity project
2. In the Project window with the Two column layout, right-click on any folder in the folders list to open the context menu
3. Click “Show in Explorer”
4. Observe the Console

Expected result: There are no errors
Actual result: There are NullReferenceException errors

Reproducible with: 2023.2.0a15
Not reproducible with: 2020.3.48f1, 2021.3.25f1, 2022.2.20f1, 2023.1.0b16, 2023.2.0a14

Reproducible on: Windows 11 Pro

Full error:
NullReferenceException: Object reference not set to an instance of an object
UnityEditor.IMGUI.Controls.TreeViewController.IterateVisibleItems (System.Int32 firstRow, System.Int32 numVisibleRows, System.Single rowWidth, System.Boolean hasFocus) (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.IMGUI.Controls.TreeViewController.OnGUI (UnityEngine.Rect rect, System.Int32 keyboardControlID) (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.SceneHierarchy.DoTreeView (System.Single searchPathHeight) (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.SceneHierarchy.OnGUI (UnityEngine.Rect rect) (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.SceneHierarchyWindow.DoSceneHierarchy () (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.SceneHierarchyWindow.OnGUI () (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition) (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.DockArea.DrawView (UnityEngine.Rect dockAreaRect) (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
UnityEditor.DockArea.OldOnGUI () (at <20f0cdc70d9c4530b7c0a934acf1310f>:0)
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 <665556350bee4980b6948a46b77dca24>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)

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