Reproduction steps:
1. Open user attached project "InputIssue.zip"
2. Select Main Menu -> Edit -> Project settings
3. In the Project settings menu navigate to the Naninovel drop-down menu
4. Press any menu item in the Naninovel menu

Expected result: Naninovel menu item opens up with no errors in the Console
Actual result: Naninovel menu item opens up with errors in the Console

Reproducible with: 2021.2.0a19, 2021.2.0b9, 2022.1.0a1
Not reproducible with: 2020.3.17f1, 2021.1.18f1, 2022.1.0a2, 2022.1.0a5
Could not test with: 2019.4.29f1 (not available for this version), 2021.2.0a1 - 2021.2.0a18 (Naninovel does not load due to errors in the Console)

Note:
Console errors:
-Error: NullReferenceException: Object reference not set to an instance of an object
UnityEditor.Presets.PresetSelector.DrawPresetButton (UnityEngine.Rect rectangle, UnityEngine.Object[] targets) (at /Users/bokken/buildslave/unity/build/Modules/PresetsEditor/PresetSelector.cs:102)
Naninovel.ConfigurationSettings.OnTitleBarGUI () (at Assets/Naninovel/Editor/Editors/Settings/ConfigurationSettings.cs:80)
UnityEditor.SettingsWindow.DrawTitleBar () (at /Users/bokken/buildslave/unity/build/Editor/Mono/Settings/SettingsWindow.cs:442)
UnityEditor.SettingsWindow.DrawSettingsPanel () (at /Users/bokken/buildslave/unity/build/Editor/Mono/Settings/SettingsWindow.cs:403)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:351)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&) (at /Users/bokken/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:189)