UdonToolkit Drag and Drop Error

[DjShinter]

UdonToolkit Drag and Drop not working as intended.

Reproduction Steps:

1. Create an Udon Script call it ExampleCode (can be named anything just an example), edit the script and replace it with

using UdonSharp;
using UnityEngine;

public class ExampleCode : UdonSharpBehaviour
{
    [SerializeField] private GameObject[] example;
}

2. Change your Udon Sharp Default Behaviour Editor to UdonToolKit Editor if you haven't already.

3. Create a game object and add Udon Behaviour and add the newly made script to it.

4. Drag multiple game objects to the example array you just made.

Results: Error on Unity Reproduction Rate: 10/10

Error Log

RefreshInfo: RefreshV2(ForceSynchronousImport)
RefreshProfiler: Total: 49.740ms
	InvokeBeforeRefreshCallbacks: 0.216ms
	ApplyChangesToAssetFolders: 0.043ms
	WriteModifiedImportersToTextMetaFiles: 0.000ms
	CleanLegacyArtifacts: 0.000ms
	Scan: 42.251ms
	OnSourceAssetsModified: 0.000ms
	UnregisterDeletedAssets: 0.000ms
	InitializeImportedAssetsSnapshot: 3.630ms
	GetAllGuidsForCategorization: 0.000ms
	CategorizeAssets: 0.000ms
	ImportAndPostprocessOutOfDateAssets: 0.000ms (0.000ms without children)
		ImportManagerImport: 0.000ms (0.000ms without children)
			ImportInProcess: 0.000ms
			ImportOutOfProcess: 0.000ms
			UpdateCategorizedAssets: 0.000ms
			RemoteAssetCacheGetArtifact: 0.000ms (0.000ms without children)
				RemoteAssetCacheResolve: 0.000ms
				RemoteAssetCacheDownloadFile: 0.000ms
		CompileScripts: 0.000ms
		PostProcessAllAssets: 0.000ms
		ReloadImportedAssets: 0.000ms
		VerifyAssetsAreUpToDateAndCorrect: 0.000ms
		EnsureUptoDateAssetsAreRegisteredWithGuidPM: 0.000ms
		InitializingProgressBar: 0.000ms
		PostProcessAllAssetNotificationsAddChangedAssets: 0.000ms
		OnDemandSchedulerStart: 0.000ms
		RestoreLoadedAssetsState: 0.000ms
	InvokeProjectHasChanged: 0.000ms
	UpdateImportedAssetsSnapshot: 0.000ms
	ReloadSourceAssets: 0.000ms
	UnloadImportedAssets: 0.000ms
	Hotreload: 0.076ms
	FixTempGuids: 0.004ms
	VerifyGuidPMRegistrations: 0.000ms
	GatherAllCurrentPrimaryArtifactRevisions: 0.347ms
	UnloadStreamsBegin: 0.040ms
	LoadedImportedAssetsSnapshotReleaseGCHandles: 0.727ms
	GetLoadedSourceAssetsSnapshot: 0.990ms
	PersistCurrentRevisions: 0.000ms
	UnloadStreamsEnd: 0.025ms
	GenerateScriptTypeHashes: 0.000ms
	Untracked: 1.392ms
NullReferenceException: Object reference not set to an instance of an object
  at UdonToolkit.UTEditorArray.HandleDragAndDrop (UnityEngine.Rect position, UnityEditor.SerializedObject obj, System.Collections.Generic.List`1[T] props) [0x00083] in F:\Unity\UdonProject\Assets\UdonToolkit\Internals\Editor\UTEditorArray.cs:76 
  at UdonToolkit.UTEditor.HandleListView (System.Collections.Generic.List`1[T] listViewFields, System.Collections.Generic.KeyValuePair`2[TKey,TValue] fieldEntry) [0x001f1] in F:\Unity\UdonProject\Assets\UdonToolkit\Internals\Editor\UTListViewHandler.cs:127 
  at UdonToolkit.UTEditor.HandleFields (System.Collections.Generic.Dictionary`2[TKey,TValue] fields) [0x00300] in F:\Unity\UdonProject\Assets\UdonToolkit\Internals\Editor\UTEditorFieldHandling.cs:72 
  at UdonToolkit.UTEditor.DrawGUI () [0x00001] in F:\Unity\UdonProject\Assets\UdonToolkit\Internals\Editor\UTEditor.cs:243 
  at UdonToolkit.UTEditor.OnInspectorGUI () [0x004cf] in F:\Unity\UdonProject\Assets\UdonToolkit\Internals\Editor\UTEditor.cs:184 
  at UdonSharpEditor.UdonBehaviourOverrideEditor.OnInspectorGUI () [0x00189] in F:\Unity\UdonProject\Assets\UdonSharp\Editor\Editors\UdonSharpBehaviourEditor.cs:507 
  at UnityEditor.UIElements.InspectorElement+<>c__DisplayClass58_0.<CreateIMGUIInspectorFromEditor>b__0 () [0x00280] in <a259d3c004024353a2c217da97495055>:0 
UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
UnityEngine.DebugLogHandler:LogException(Exception, Object)
UnityEngine.Logger:LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
UnityEditor.UIElements.<>c__DisplayClass58_0:<CreateIMGUIInspectorFromEditor>b__0()
UnityEngine.UIElements.IMGUIContainer:DoOnGUI(Event, Matrix4x4, Rect, Boolean, Rect, Action, Boolean)
UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent(Event, Matrix4x4, Rect, Action, Boolean)
UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent(Event, Action, Boolean)
UnityEngine.UIElements.IMGUIContainer:HandleIMGUIEvent(Event, Boolean)
UnityEngine.UIElements.IMGUIContainer:SendEventToIMGUI(EventBase, Boolean)
UnityEngine.UIElements.IMGUIContainer:HandleEvent(EventBase)
UnityEngine.UIElements.EventDispatchUtilities:PropagateEvent(EventBase)
UnityEngine.UIElements.MouseEventDispatchingStrategy:DispatchEvent(EventBase, IPanel)
UnityEngine.UIElements.EventDispatcher:ApplyDispatchingStrategies(EventBase, IPanel, Boolean)
UnityEngine.UIElements.EventDispatcher:ProcessEvent(EventBase, IPanel)
UnityEngine.UIElements.EventDispatcher:Dispatch(EventBase, IPanel, DispatchMode)
UnityEngine.UIElements.BaseVisualElementPanel:SendEvent(EventBase, DispatchMode)
UnityEngine.UIElements.UIElementsUtility:DoDispatch(BaseVisualElementPanel)
UnityEngine.UIElements.UIElementsUtility:ProcessEvent(Int32, IntPtr)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
 
(Filename: Assets/UdonToolkit/Internals/Editor/UTEditorArray.cs Line: 76)