InvalidOperationException and ArgumentException errors are thrown on selecting InputActionImporter preset asset. Unabl to edit InputActionImporter preset asset properties.

Steps to repro:
1. Create a new project.
2. Window > Package Manager > Input System > Install.
3. Project Window > Right Click > Create > Input Actions.
4. Enable "Generate C# Class" checkbox > Apply > Create its preset.
5. Select InputActionImporter preset asset.

Actual Result:
InvalidOperationException and ArgumentException errors are thrown in the console.

Expected Result:
No errors in the console.

Tested with Unity Version: 2020.1.0a13, 2019.3.0b12, 2019.2.0f1.

Reproducible in Package Version: preview.3 - 1.0.0, preview.2 - 1.0.0, preview.1 - 1.0.0, preview - 1.0.0, preview.2 - 0.2.10.

Environment:
Windows 10 & Mac 10.14.

Stack trace:
InvalidOperationException: Asset editor has not been initialized yet
UnityEngine.InputSystem.Editor.InputActionImporterEditor.GetAsset () (at library/packagecache/com.unity.inputsystem@1.0.0-preview.3/inputsystem/editor/assetimporter/inputactionimportereditor.cs:87)
UnityEngine.InputSystem.Editor.InputActionImporterEditor.OnInspectorGUI () (at library/packagecache/com.unity.inputsystem@1.0.0-preview.3/inputsystem/editor/assetimporter/inputactionimportereditor.cs:42)
UnityEditor.Presets.PresetEditor.DrawInternalInspector () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Presets.PresetEditor.DrawPresetData () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Presets.PresetEditor.OnInspectorGUI () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.UIElements.InspectorElement+<>c__DisplayClass55_0.<CreateIMGUIInspectorFromEditor>b__0 () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
===============================================
ArgumentException: GUILayout: Mismatched LayoutGroup.repaint
UnityEngine.GUILayoutUtility.BeginLayoutGroup (UnityEngine.GUIStyle style, UnityEngine.GUILayoutOption[] options, System.Type layoutType) (at <023540da4c6041d9a2d1762b4d9d517c>:0)
UnityEngine.GUILayout.BeginHorizontal (UnityEngine.GUIContent content, UnityEngine.GUIStyle style, UnityEngine.GUILayoutOption[] options) (at <023540da4c6041d9a2d1762b4d9d517c>:0)
UnityEngine.GUILayout.BeginHorizontal (UnityEngine.GUIStyle style, UnityEngine.GUILayoutOption[] options) (at <023540da4c6041d9a2d1762b4d9d517c>:0)
UnityEditor.Editor.DrawHeaderGUI (UnityEditor.Editor editor, System.String header, System.Single leftMargin) (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Editor.DrawHeaderGUI (UnityEditor.Editor editor, System.String header) (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Editor.OnHeaderGUI () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Editor.DrawHeaderFromInsideHierarchy () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Editor.DrawHeader () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Presets.PresetEditor.DrawInternalInspector () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Presets.PresetEditor.DrawPresetData () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.Presets.PresetEditor.OnInspectorGUI () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEditor.UIElements.InspectorElement+<>c__DisplayClass55_0.<CreateIMGUIInspectorFromEditor>b__0 () (at <f77adbe680d5435ab56e2403863ec057>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)