On opening any basic tutorial project, docking and resizing of any window becomes unresponsive

Steps to reproduce:
1) Open Unity> Switch to learn tab .
2) In basic tutorial download and open any project.
3) Try docking and resizing any window

Actual result: Observe that docking and resizing of any window becomes unresponsive

Reproducible on : 2019.1.0a12, 2019.1.0a11, 2018.2.0b2, 2018.1.0f1, 2018.1.0b1, 2017.3.0f3

Working fine on : 2017.2.0f3, 2017.1.0f3

Environment: Windows and Mac

Note:
Reproducible on very few machines.

Stack trace:
MissingMethodException: Method not found: 'UnityEngine.Experimental.UIElements.VisualElement.get_parent'.
Unity.InteractiveTutorials.TutorialWindow.ApplyMaskingSettings (Boolean applyMask) (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:626)
Unity.InteractiveTutorials.TutorialWindow.OnTutorialPageCriteriaCompletionStateTested (Unity.InteractiveTutorials.TutorialPage sender) (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:162)
Unity.InteractiveTutorials.TutorialPage.ValidateCriteria () (at Assets/Plugins/Interactive Tutorials/Editor/Models/TutorialPage.cs:334)
Unity.InteractiveTutorials.TutorialPage.SetupCompletionRequirements () (at Assets/Plugins/Interactive Tutorials/Editor/Models/TutorialPage.cs:227)
Unity.InteractiveTutorials.TutorialPage.Initiate () (at Assets/Plugins/Interactive Tutorials/Editor/Models/TutorialPage.cs:199)
Unity.InteractiveTutorials.TutorialWindow.SetUpTutorial () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:334)
Unity.InteractiveTutorials.TutorialWindow.OnEnable () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:129)
UnityEditor.EditorWindow:GetWindow()
Unity.InteractiveTutorials.TutorialWindow:CreateWindow() (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:18)
Unity.InteractiveTutorials.UserStartupCode:RunStartupCode() (at Assets/Plugins/Interactive Tutorials/Editor/UserStartupCode.cs:15)
Unity.InteractiveTutorials.UserStartupCode:InitRunStartupCode() (at Assets/Plugins/Interactive Tutorials/Editor/UserStartupCode.cs:43)
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()

MissingMethodException: Method not found: 'UnityEngine.Experimental.UIElements.VisualElement.get_parent'.
Unity.InteractiveTutorials.TutorialWindow.ApplyMaskingSettings (Boolean applyMask) (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:626)
Unity.InteractiveTutorials.TutorialWindow.OnGUIViewPositionChanged () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:621)
Unity.InteractiveTutorials.GUIViewProxy.OnPositionChanged (UnityEditor.GUIView guiView)
UnityEditor.GUIView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/GUIView.cs:204)
UnityEditor.HostView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:49)
UnityEditor.View.set_position (Rect value) (at C:/buildslave/unity/build/Editor/Mono/View.cs:119)
UnityEditor.SplitView.SetupRectsFromSplitter () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:112)
UnityEditor.SplitView.Reflow () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:165)
UnityEditor.DockArea.AddTab (Int32 idx, UnityEditor.EditorWindow pane) (at C:/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:152)
UnityEditor.DockArea.AddTab (UnityEditor.EditorWindow pane) (at C:/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:141)
UnityEditor.EditorWindow.CreateNewWindowForEditorWindow (UnityEditor.EditorWindow window, Vector2 screenPosition, Boolean loadPosition, Boolean showImmediately) (at C:/buildslave/unity/build/Editor/Mono/EditorWindow.cs:953)
UnityEditor.EditorWindow.CreateNewWindowForEditorWindow (UnityEditor.EditorWindow window, Boolean loadPosition, Boolean showImmediately) (at C:/buildslave/unity/build/Editor/Mono/EditorWindow.cs:943)
UnityEditor.EditorWindow.Show (Boolean immediateDisplay) (at C:/buildslave/unity/build/Editor/Mono/EditorWindow.cs:539)
UnityEditor.EditorWindow.Show () (at C:/buildslave/unity/build/Editor/Mono/EditorWindow.cs:531)
UnityEditor.EditorWindow.GetWindowPrivate (System.Type t, Boolean utility, System.String title, Boolean focus) (at C:/buildslave/unity/build/Editor/Mono/EditorWindow.cs:577)
UnityEditor.EditorWindow.GetWindow (System.Type t, Boolean utility, System.String title, Boolean focus) (at C:/buildslave/unity/build/artifacts/generated/bindings_old/common/Editor/EditorWindowBindings.gen.cs:51)
UnityEditor.EditorWindow.GetWindow[TutorialWindow] (Boolean utility, System.String title, Boolean focus) (at C:/buildslave/unity/build/Editor/Mono/EditorWindow.cs:617)
UnityEditor.EditorWindow.GetWindow[TutorialWindow] () (at C:/buildslave/unity/build/Editor/Mono/EditorWindow.cs:591)
Unity.InteractiveTutorials.TutorialWindow.CreateWindow () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:18)
Unity.InteractiveTutorials.UserStartupCode.RunStartupCode () (at Assets/Plugins/Interactive Tutorials/Editor/UserStartupCode.cs:15)
Unity.InteractiveTutorials.UserStartupCode.InitRunStartupCode () (at Assets/Plugins/Interactive Tutorials/Editor/UserStartupCode.cs:43)
UnityEditor.EditorApplication.Internal_CallUpdateFunctions () (at C:/buildslave/unity/build/Editor/Mono/EditorApplication.cs:183)

MissingMethodException: Method not found: 'UnityEngine.Experimental.UIElements.VisualElement.get_parent'.
Unity.InteractiveTutorials.TutorialWindow.ApplyMaskingSettings (Boolean applyMask) (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:626)
Unity.InteractiveTutorials.TutorialWindow.ApplyQueuedMask () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:350)
UnityEditor.EditorApplication.Internal_CallUpdateFunctions () (at C:/buildslave/unity/build/Editor/Mono/EditorApplication.cs:183)

MissingMethodException: Method not found: 'UnityEngine.Experimental.UIElements.VisualElement.get_parent'.
Unity.InteractiveTutorials.TutorialWindow.ApplyMaskingSettings (Boolean applyMask) (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:626)
Unity.InteractiveTutorials.TutorialWindow.OnDisable () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:179)

MissingMethodException: Method not found: 'UnityEngine.Experimental.UIElements.VisualElement.get_parent'.
Unity.InteractiveTutorials.TutorialWindow.ApplyMaskingSettings (Boolean applyMask) (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:626)
Unity.InteractiveTutorials.TutorialWindow.OnGUIViewPositionChanged () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:621)
Unity.InteractiveTutorials.GUIViewProxy.OnPositionChanged (UnityEditor.GUIView guiView)
UnityEditor.GUIView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/GUIView.cs:204)
UnityEditor.HostView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:49)
UnityEditor.View.set_position (Rect value) (at C:/buildslave/unity/build/Editor/Mono/View.cs:119)
UnityEditor.SplitView.SetupRectsFromSplitter () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:112)
UnityEditor.SplitView.Reflow () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:165)
UnityEditor.SplitView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:742)
UnityEditor.View.set_position (Rect value) (at C:/buildslave/unity/build/Editor/Mono/View.cs:119)
UnityEditor.SplitView.SetupRectsFromSplitter () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:110)
UnityEditor.SplitView.Reflow () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:165)
UnityEditor.SplitView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:742)
UnityEditor.View.set_position (Rect value) (at C:/buildslave/unity/build/Editor/Mono/View.cs:119)
UnityEditor.SplitView.SetupRectsFromSplitter () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:112)
UnityEditor.SplitView.SplitGUI (UnityEngine.Event evt) (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:725)
UnityEditor.SplitView.SplitGUI (UnityEngine.Event evt) (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:667)
UnityEditor.DockArea.OldOnGUI () (at C:/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:323)
UnityEngine.Experimental.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:206)

MissingMethodException: Method not found: 'UnityEngine.Experimental.UIElements.VisualElement.get_parent'.
Unity.InteractiveTutorials.TutorialWindow.ApplyMaskingSettings (Boolean applyMask) (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:626)
Unity.InteractiveTutorials.TutorialWindow.OnGUIViewPositionChanged () (at Assets/Plugins/Interactive Tutorials/Editor/Editor Windows/TutorialWindow.cs:621)
Unity.InteractiveTutorials.GUIViewProxy.OnPositionChanged (UnityEditor.GUIView guiView)
UnityEditor.GUIView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/GUIView.cs:204)
UnityEditor.HostView.SetPosition (Rect newPos) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:49)
UnityEditor.View.set_position (Rect value) (at C:/buildslave/unity/build/Editor/Mono/View.cs:119)
UnityEditor.SplitView.SetupRectsFromSplitter () (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:110)
UnityEditor.SplitView.SplitGUI (UnityEngine.Event evt) (at C:/buildslave/unity/build/Editor/Mono/GUI/SplitView.cs:725)
UnityEditor.DockArea.OldOnGUI () (at C:/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:323)
UnityEngine.Experimental.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:206)