"SerializedObject of SerializedProperty has been Disposed" error is thrown in Console when undoing Layer Type change on Cylinder Layer UI Panel

Steps to reproduce:
1. Create new Unity project using Universal 3D Template
2. Open Package Manager window
3. Find and install XR Composition Layers package
4. In Hierarchy window create Cylinder Layer Panel UI and select it
5. In Inspector window > Composition Layer change Layer Type to Quad
6. Press undo with keyboard shortcut
7. Observe the Console window

Actual results: “NullReferenceException: SerializedObject of SerializedProperty has been Disposed.” Errors is thrown in the Console when performing undo action with keyboard shortcut

Expected results: No errors are thrown in the Console window when performing undo action with keyboard shortcut, changes are undo in the Inspector window

Reproducible with versions: 2.5.0 (6000.3.20f1, 6000.5.4f1, 6000.6.0b5, 6000.7.0a3)

Can’t test with versions: 6000.0.78f1 (XR Composition Layers package package is not available)

Tested on (OS): macOS Tahoe 26.5.2 (M1)

NullReferenceException: SerializedObject of SerializedProperty has been Disposed.
UnityEditor.SerializedProperty.get_managedReferenceValue () (at /Users/bokken/build/output/unity/unity/Editor/Mono/SerializedProperty.bindings.cs:1418)
Unity.XR.CompositionLayers.Layers.Editor.CompositionLayerEditor.SyncLayerDataToPopupField () (at ./Library/PackageCache/com.unity.xr.compositionlayers@2843cb312e13/Editor/Layers/CompositionLayerEditor.cs:490)
UnityEditor.EditorApplication.Internal_CallDelayFunctions () (at /Users/bokken/build/output/unity/unity/Editor/Mono/EditorApplication.cs:428)
UnityEngine.StackTraceUtility:ExtractStringFromExceptionInternal(Object, String&, String&) (at /Users/bokken/build/output/unity/unity/Runtime/Export/Scripting/StackTrace.cs:50)