Cannot change position and magin/padding values

[hotsunchip]

Hi. I'm really enjoying using your tool. However, I am currently experiencing that the UIBlock2D icon is broken and the position value, margin, and padding values ​​cannot be adjusted

with following error in console window:

InvalidOperationException: The current selection does not contain any objects editable by the component tool of type: Nova.Editor.Tools.UIBlockTool
UnityEditor.EditorTools.ToolManager.SetActiveTool (System.Type type) (at /Users/bokken/build/output/unity/unity/Editor/Mono/GUI/Tools/ToolManager.cs:106)
UnityEditor.EditorTools.ToolManager.SetActiveTool[T] () (at /Users/bokken/build/output/unity/unity/Editor/Mono/GUI/Tools/ToolManager.cs:86)
Nova.Editor.GUIs.NovaLayoutEditors.DrawPositionUI (Nova.Editor.Serialization.Wrappers+_Layout layout, Nova.UIBlock uiBlock) (at Assets/ThirdParty/Nova/Scripts/Editor/NovaLayoutEditors.cs:183)
Nova.Editor.GUIs.UIBlock2DEditor.DoGui (Nova.UIBlock2D uiBlock) (at Assets/ThirdParty/Nova/Scripts/Editor/UIBlock2DEditor.cs:41)
Nova.Editor.GUIs.BlockEditor`1[TBlock].OnInspectorGUI () (at Assets/ThirdParty/Nova/Scripts/Editor/BlockEditor.cs:109)
UnityEditor.UIElements.InspectorElement+<>c__DisplayClass59_0.<CreateIMGUIInspectorFromEditor>b__0 () (at /Users/bokken/build/output/unity/unity/ModuleOverrides/com.unity.ui/Editor/Inspector/InspectorElement.cs:636)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&) (at /Users/bokken/build/output/unity/unity/Modules/IMGUI/GUIUtility.cs:189)

At first, it was solved by simply changing the git branch, but now that doesn't work either. I reset the packages to default but it doesn't work. How can I resolve this?

[adgray1]

A few follow up questions:

1. Are there any notable steps involved in reproducing the issue, or do you see the error logged every time you select a new UIBlock?
2. Does this persist if you restart the Unity editor?
3. Which version of Unity are you using?

[hotsunchip]

1. There aren't any notable steps. Once it occurs, the same error are found no matter which block is selected.
2. It persists.
3. I'm using 2021.3.29f1

I currently found out that the error comes and goes randomly regardless of branch.