Unity Editor NullReferenceException when clicking on GameObjects

Hello,

i am experiencing NullReferenceExceptions and out of Bounds - Debug.LogErrors in the Unity Editor with the Game4Automation Professional Package installed.

Steps to recreate the behaviour are 

- take a empty project

- import the G4A Professional 2020.15 package

- click on the "PlasticBox" Gameobject

You will be flooded with following errors:

Retrieving array element that was out of bounds
UnityEditor.SerializedProperty:GetArrayElementAtIndex (int)
NaughtyAttributes.Editor.ReorderableListPropertyDrawer/<>c__DisplayClass6_0:b__2 (int) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/PropertyDrawers_SpecialCase/ReorderableListPropertyDrawer.cs:78)
UnityEditorInternal.ReorderableList:CacheIfNeeded ()
UnityEditorInternal.ReorderableList:GetListElementHeight ()
UnityEditorInternal.ReorderableList:DoLayoutList ()
NaughtyAttributes.Editor.ReorderableListPropertyDrawer:OnGUI_Internal (UnityEngine.Rect,UnityEditor.SerializedProperty,UnityEngine.GUIContent) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/PropertyDrawers_SpecialCase/ReorderableListPropertyDrawer.cs:89)
NaughtyAttributes.Editor.SpecialCasePropertyDrawerBase:OnGUI (UnityEngine.Rect,UnityEditor.SerializedProperty) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/PropertyDrawers_SpecialCase/SpecialCasePropertyDrawerBase.cs:32)
NaughtyAttributes.Editor.NaughtyEditorGUI:PropertyField_Implementation (UnityEngine.Rect,UnityEditor.SerializedProperty,bool,NaughtyAttributes.Editor.NaughtyEditorGUI/PropertyFieldFunction) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/Utility/NaughtyEditorGUI.cs:47)
NaughtyAttributes.Editor.NaughtyEditorGUI:PropertyField_Layout (UnityEditor.SerializedProperty,bool) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/Utility/NaughtyEditorGUI.cs:29)
NaughtyAttributes.Editor.NaughtyInspector:DrawSerializedProperties () (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/NaughtyInspector.cs:87)
NaughtyAttributes.Editor.NaughtyInspector:OnInspectorGUI () (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/NaughtyInspector.cs:47)
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.PropertyHandler.GetHeight (UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <3371b3e2e5754acd87e600e068350da5>:0)
UnityEditor.EditorGUI.GetPropertyHeightInternal (UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <3371b3e2e5754acd87e600e068350da5>:0)
UnityEditor.EditorGUI.GetPropertyHeight (UnityEditor.SerializedProperty property, UnityEngine.GUIContent label, System.Boolean includeChildren) (at <3371b3e2e5754acd87e600e068350da5>:0)
UnityEditor.EditorGUI.GetPropertyHeight (UnityEditor.SerializedProperty property) (at <3371b3e2e5754acd87e600e068350da5>:0)
NaughtyAttributes.Editor.ReorderableListPropertyDrawer+<>c__DisplayClass6_0.b__2 (System.Int32 index) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/PropertyDrawers_SpecialCase/ReorderableListPropertyDrawer.cs:78)
UnityEditorInternal.ReorderableList.CacheIfNeeded () (at <3371b3e2e5754acd87e600e068350da5>:0)
UnityEditorInternal.ReorderableList.GetListElementHeight () (at <3371b3e2e5754acd87e600e068350da5>:0)
UnityEditorInternal.ReorderableList.DoLayoutList () (at <3371b3e2e5754acd87e600e068350da5>:0)
NaughtyAttributes.Editor.ReorderableListPropertyDrawer.OnGUI_Internal (UnityEngine.Rect rect, UnityEditor.SerializedProperty property, UnityEngine.GUIContent label) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/PropertyDrawers_SpecialCase/ReorderableListPropertyDrawer.cs:89)
NaughtyAttributes.Editor.SpecialCasePropertyDrawerBase.OnGUI (UnityEngine.Rect rect, UnityEditor.SerializedProperty property) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/PropertyDrawers_SpecialCase/SpecialCasePropertyDrawerBase.cs:32)
NaughtyAttributes.Editor.NaughtyEditorGUI.PropertyField_Implementation (UnityEngine.Rect rect, UnityEditor.SerializedProperty property, System.Boolean includeChildren, NaughtyAttributes.Editor.NaughtyEditorGUI+PropertyFieldFunction propertyFieldFunction) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/Utility/NaughtyEditorGUI.cs:47)
NaughtyAttributes.Editor.NaughtyEditorGUI.PropertyField_Layout (UnityEditor.SerializedProperty property, System.Boolean includeChildren) (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/Utility/NaughtyEditorGUI.cs:29)
NaughtyAttributes.Editor.NaughtyInspector.DrawSerializedProperties () (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/NaughtyInspector.cs:87)
NaughtyAttributes.Editor.NaughtyInspector.OnInspectorGUI () (at Assets/game4automation/private/Tools/NaughtyAttributes/Editor/NaughtyInspector.cs:47)
UnityEditor.UIElements.InspectorElement+<>c__DisplayClass59_0.b__0 () (at :0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)

My Setup:

- Unity 2020.3.33f1 LTS ( this also occures at the newest released Unity 2021.3 LTS Version )

- an empty Project

What did i try?

- Scripting Define Symbols are set

- the "game4automation -> apply standard settings" doesnt change anything

- deleting the current Version of NaughtyAttributes in the folder "Assets/game4automation/private/Tools" and importing the current release of NaughtyAttributes of github to the project

Everything is working as expected in old LTS Versions, like Unity 2020.3.19.