Steps to reproduce:
1. Open QA-supplied project "NodeTest.zip"
2. Open Scene called "MainScene"
3. Select Canvas GameObject
4. In the Inspector window, under Behaviour Tree Owner (Script) select EDIT BEHAVIOUR TREE
5. Under Canvas window that opened up, double-click "START" tab to open it in Visual Studio

Expected: Visual Studio opens up and the User is able to edit the script
Actual: Once the Visual Studio fully loads up the script, Unity crashes

Reproduced in: 2017.3.0a1, 2017.3.1p1, 2018.1.0a4
Not Reproduced in: 2017.1.3p2, 2017.2.2p1, 2018.1.0a5, 2018.1.0b10, 2018.2.0a3

Note: the crash only reproduces when opening the script with Visual Studio, other scripting software do not seem to replicate the same outcome.
The issue appeared in 2017.3 has been fixed in 2018.1.0a5.

0x00000001403BB347 (Unity) FindObjectsOfTypeImplementation<ObjectCollector>
0x00000001403BD8E3 (Unity) Object::FindObjectsOfType
0x0000000140A2223A (Unity) Scripting::FindObjectsOfType
0x000000014144C56E (Unity) Resources_CUSTOM_FindObjectsOfTypeAll
0x00000000327A2FF5 (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Resources:FindObjectsOfTypeAll (System.Type)
0x00000000327A2E87 (Mono JIT Code) [C:\buildslave\unity\build\artifacts\generated\common\runtime\ResourcesBindings.gen.cs:42] UnityEngine.Resources:FindObjectsOfTypeAll<object> ()
0x0000000033E6933A (Mono JIT Code) ProBuilder2.EditorCommon.pb_TooltipWindow:Hide ()
0x0000000033E58C80 (Mono JIT Code) ProBuilder2.EditorCommon.pb_EditorToolbar:OnGUI ()
0x0000000033E55AAB (Mono JIT Code) ProBuilder2.EditorCommon.pb_Editor:OnGUI ()
0x000000000C0D7402 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
0x00007FFDD39E64E7 (mono) [c:\buildslave\mono\build\mono\mini\mini.c:4937] mono_jit_runtime_invoke
0x00007FFDD3938A51 (mono) [c:\buildslave\mono\build\mono\metadata\object.c:2623] mono_runtime_invoke
0x00007FFDD393EF5F (mono) [c:\buildslave\mono\build\mono\metadata\object.c:3838] mono_runtime_invoke_array
0x00007FFDD38FD34B (mono) [c:\buildslave\mono\build\mono\metadata\icall.c:2750] ves_icall_InternalInvoke
0x000000000C0A0847 (Mono JIT Code) (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (object,object[],System.Exception&)
0x000000000C09E9A2 (Mono JIT Code) [/Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222] System.Reflection.MonoMethod:Invoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo)
0x000000000C14FBCF (Mono JIT Code) [/Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115] System.Reflection.MethodBase:Invoke (object,object[])
0x000000003274D145 (Mono JIT Code) [C:\buildslave\unity\build\Editor\Mono\HostView.cs:295] UnityEditor.HostView:Invoke (string,object)
0x000000003274CFEA (Mono JIT Code) [C:\buildslave\unity\build\Editor\Mono\HostView.cs:288] UnityEditor.HostView:Invoke (string)
0x0000000032AF3060 (Mono JIT Code) [C:\buildslave\unity\build\Editor\Mono\HostView.cs:255] UnityEditor.HostView:InvokeOnGUI (UnityEngine.Rect)
0x0000000032AE6CC7 (Mono JIT Code) [C:\buildslave\unity\build\Editor\Mono\GUI\DockArea.cs:396] UnityEditor.DockArea:OldOnGUI ()
0x0000000032AA4388 (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\IMGUIContainer.cs:182] UnityEngine.Experimental.UIElements.IMGUIContainer:DoOnGUI (UnityEngine.Event)
0x0000000032AA3400 (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\IMGUIContainer.cs:338] UnityEngine.Experimental.UIElements.IMGUIContainer:HandleIMGUIEvent (UnityEngine.Event)
0x0000000032AA2EED (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\IMGUIContainer.cs:69] UnityEngine.Experimental.UIElements.IMGUIContainer:DoRepaint (UnityEngine.IStylePainter)
0x0000000032A9A82B (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\Panel.cs:532] UnityEngine.Experimental.UIElements.Panel:PaintSubTree (UnityEngine.Event,UnityEngine.Experimental.UIElements.VisualElement,UnityEngine.Matrix4x4,UnityEngine.Rect)
0x0000000032AA1380 (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\Panel.cs:547] UnityEngine.Experimental.UIElements.Panel:PaintSubTreeChildren (UnityEngine.Event,UnityEngine.Experimental.UIElements.VisualElement,UnityEngine.Matrix4x4,UnityEngine.Rect)
0x0000000032A9AA23 (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\Panel.cs:536] UnityEngine.Experimental.UIElements.Panel:PaintSubTree (UnityEngine.Event,UnityEngine.Experimental.UIElements.VisualElement,UnityEngine.Matrix4x4,UnityEngine.Rect)
0x00000000328E7C8F (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\Panel.cs:564] UnityEngine.Experimental.UIElements.Panel:Repaint (UnityEngine.Event)
0x00000000328E71B8 (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\UIElementsUtility.cs:236] UnityEngine.Experimental.UIElements.UIElementsUtility:DoDispatch (UnityEngine.Experimental.UIElements.BaseVisualElementPanel)
0x00000000328E6E7B (Mono JIT Code) [C:\buildslave\unity\build\Runtime\UIElements\Managed\UIElementsUtility.cs:78] UnityEngine.Experimental.UIElements.UIElementsUtility:ProcessEvent (int,intptr)
0x00000000328E699D (Mono JIT Code) [C:\buildslave\unity\build\Runtime\IMGUI\Managed\GUIUtility.cs:175] UnityEngine.GUIUtility:ProcessEvent (int,intptr)
0x00000000328E6B5E (Mono JIT Code) (wrapper runtime-invoke) <Module>:runtime_invoke_bool_int_intptr (object,intptr,intptr,intptr)
0x00007FFDD39E64E7 (mono) [c:\buildslave\mono\build\mono\mini\mini.c:4937] mono_jit_runtime_invoke
0x00007FFDD3938A51 (mono) [c:\buildslave\mono\build\mono\metadata\object.c:2623] mono_runtime_invoke
0x0000000140A2EF6C (Unity) scripting_method_invoke
0x0000000140A229AA (Unity) ScriptingInvocation::Invoke
0x0000000140A23A5A (Unity) ScriptingInvocation::Invoke<bool>
0x0000000140282DAE (Unity) IMGUIScriptingClasses::ProcessEvent
0x000000014112A4AF (Unity) GUIView::ProcessRetainedMode
0x00000001413FAA88 (Unity) GUIView::OnInputEvent
0x000000014112A34C (Unity) GUIView::ProcessInputEvent
0x00000001413EF286 (Unity) GUIView::DoPaint
0x00000001413F4AF0 (Unity) GUIView::RepaintAll
0x00000001411E9288 (Unity) Application::TickTimer
0x000000014140FEEF (Unity) MainMessageLoop
0x00000001414117AC (Unity) WinMain
0x0000000141E65728 (Unity) __tmainCRTStartup
0x00007FFDF4B313D2 (KERNEL32) BaseThreadInitThunk
0x00007FFDF68454F4 (ntdll) RtlUserThreadStart