Steps to reproduce:
1. Open User-supplied project ("SceneLoading Bug.zip")
2. Open Scene "Home Menu"
3. Enter Play mode and press the "Load tuto" button inside the Game view
4. After a couple of seconds, select any Gameobject from inside the Scene view

Expected: no crashing
Actual: crash

Reproduced in: 2017.4.0f1, 2017.4.16f1, 2018.2.19f2, 2018.3.0f1, 2019.1.0a11

Full stack trace:
GetManagerFromContext: pointer to object of manager 'RenderSettings' is NULL (table index 24)
UnityEngine.RenderSettings:get_fog()
UnityEditor.SceneView:SetupFogAndShadowDistance(Boolean&, Single&) (at C:\buildslave\unity\build\Editor\Mono\SceneView\SceneView.cs:977)
UnityEditor.SceneView:OnGUI() (at C:\buildslave\unity\build\Editor\Mono\SceneView\SceneView.cs:1684)
System.Reflection.MonoMethod:InternalInvoke(Object, Object[], Exception&)
System.Reflection.MonoMethod:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
System.Reflection.MethodBase:Invoke(Object, Object[]) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)
UnityEditor.HostView:Invoke(String, Object) (at C:\buildslave\unity\build\Editor\Mono\HostView.cs:295)
UnityEditor.HostView:Invoke(String) (at C:\buildslave\unity\build\Editor\Mono\HostView.cs:288)
UnityEditor.HostView:InvokeOnGUI(Rect) (at C:\buildslave\unity\build\Editor\Mono\HostView.cs:255)
UnityEditor.DockArea:OldOnGUI() (at C:\buildslave\unity\build\Editor\Mono\GUI\DockArea.cs:392)
UnityEngine.Experimental.UIElements.IMGUIContainer:DoOnGUI(Event, Boolean) (at C:\buildslave\unity\build\Modules\UIElements\IMGUIContainer.cs:216)
UnityEngine.Experimental.UIElements.IMGUIContainer:HandleIMGUIEvent(Event) (at C:\buildslave\unity\build\Modules\UIElements\IMGUIContainer.cs:373)
UnityEngine.Experimental.UIElements.IMGUIContainer:DoRepaint(IStylePainter) (at C:\buildslave\unity\build\Modules\UIElements\IMGUIContainer.cs:88)
UnityEngine.Experimental.UIElements.Panel:PaintSubTree(Event, VisualElement, Matrix4x4, ClippingOptions, Rect) (at C:\buildslave\unity\build\Modules\UIElements\Panel.cs:732)
UnityEngine.Experimental.UIElements.Panel:PaintSubTreeChildren(Event, VisualElement, Matrix4x4, ClippingOptions, Rect) (at C:\buildslave\unity\build\Modules\UIElements\Panel.cs:748)
UnityEngine.Experimental.UIElements.Panel:PaintSubTree(Event, VisualElement, Matrix4x4, ClippingOptions, Rect) (at C:\buildslave\unity\build\Modules\UIElements\Panel.cs:736)
UnityEngine.Experimental.UIElements.Panel:Repaint(Event) (at C:\buildslave\unity\build\Modules\UIElements\Panel.cs:778)
UnityEngine.Experimental.UIElements.UIElementsUtility:DoDispatch(BaseVisualElementPanel) (at C:\buildslave\unity\build\Modules\UIElements\UIElementsUtility.cs:227)
UnityEngine.Experimental.UIElements.UIElementsUtility:ProcessEvent(Int32, IntPtr) (at C:\buildslave\unity\build\Modules\UIElements\UIElementsUtility.cs:74)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:\buildslave\unity\build\Modules\IMGUI\GUIUtility.cs:171)