saftey check

src/PixiEditor/ViewModels/Tools/ToolSettings/Settings/Setting.cs

@@ -27,7 +27,15 @@ internal abstract class Setting<T> : Setting
 
     public new virtual T Value
     {
-        get => (T)base.Value;
+        get
+        {
+            if(base.Value != null && base.Value is not T value)
+            {
+                return default;
+            }
+            
+            return (T)base.Value;
+        }
         set
         {
             T oldValue = default;

src/PixiEditor/ViewModels/Tools/ToolSettings/Toolbars/Toolbar.cs

@@ -44,7 +44,7 @@ internal abstract class Toolbar : ObservableObject, IToolbar
     {
         Setting setting = Settings.FirstOrDefault(currentSetting => string.Equals(currentSetting.Name, name, StringComparison.CurrentCultureIgnoreCase));
 
-        if (setting is null || setting is not T convertedSetting)
+        if (setting is not T convertedSetting)
         {
             return null;
         }