Null reference Exception thrown on saving and replacing the existing search data

Steps to Repro:

1. Create a new project
2. Click on search Icon besides collab icon
3. Enter any characters
4. Click on the Save button in the Search window
5. Repeat 3rd and 4th Step

Expected Result:
Data should be replaced and saved

Actual Result:
Null reference exception is thrown on saving and replacing the existing search data

Reproducible on: 2021.1.0a1

Environment: Windows and Mac

Note: Global Search option in Editor is introduced in 2021.1.0a1

StackTrace:

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.UIElements.EditorElement.Reinit (System.Int32 editorIndex) (at <102e2bd0aecb44b4a94d16cc05249817>:0)
UnityEditor.PropertyEditor.ProcessEditorElementsToRebuild (UnityEditor.Editor[] editors) (at <859685c8158c480a8d135de9619162c9>:0)
UnityEditor.PropertyEditor.DrawEditors (UnityEditor.Editor[] editors) (at <859685c8158c480a8d135de9619162c9>:0)
UnityEditor.PropertyEditor.RebuildContentsContainers () (at <859685c8158c480a8d135de9619162c9>:0)
UnityEditor.InspectorWindow.RedrawFromNative () (at <859685c8158c480a8d135de9619162c9>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)