Animator suddenly crashed

[hottabych]

Unity 2017.1.0f3

On click it logs out into console

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.Graphs.ParameterControllerView.HasKeyboardControl () (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Animation/ParameterControllerView.cs:762)
UnityEditor.Graphs.AnimatorControllerTool.OnGUI () (at C:/buildslave/unity/build/Editor/Graphs/UnityEditor.Graphs/Animation/AnimatorControllerTool.cs:1006)
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[ ] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[ ] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[ ] parameters) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MethodBase.cs:115)
UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:272)
UnityEditor.HostView.Invoke (System.String methodName) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:265)
UnityEditor.HostView.InvokeOnGUI (Rect onGUIPosition) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:232)

[Suzuka91_1]

It’s also happening to me.
Occurs randomly while editing the animator.
The error is “”“solved”“” by runing the scene or exit unity, but after a few seconds editing the animator, the error shows again and it’s not possible to continue editing.
I am using 2017.1.0f3 version too.