diff --git a/tkintertools/core/containers.py b/tkintertools/core/containers.py
index f1c19157..0bb83fa9 100644
--- a/tkintertools/core/containers.py
+++ b/tkintertools/core/containers.py
@@ -602,7 +602,9 @@ def destroy(self) -> None:
         self.master.canvases.remove(self)
 
         for widget in tuple(self.widgets):
-            widget.destroy()
+            # Nested widget will be destroyed by its parent widget
+            if not widget.nested:
+                widget.destroy()
 
         return tkinter.Canvas.destroy(self)
 
diff --git a/tkintertools/standard/widgets.py b/tkintertools/standard/widgets.py
index 8f5342c8..fcfbd0ba 100644
--- a/tkintertools/standard/widgets.py
+++ b/tkintertools/standard/widgets.py
@@ -357,7 +357,7 @@ def set(self, value: bool, *, callback: bool = False) -> None:
             self.feature.command(value)
         if self.get() == bool(value):
             return
-        self.update(f"{self.state.split('-', maxsplit=1)}-{'on' if value else 'off'}", gradient_animation=True)
+        self.update(f"{self.state.split('-', maxsplit=1)[0]}-{'on' if value else 'off'}")
         dx = self.shapes[0].size[0]/2 if value else -self.shapes[0].size[0]/2
         animations.MoveElement(
             self.shapes[1], (dx, 0), 250, controller=controllers.smooth, fps=60).start()
@@ -526,7 +526,7 @@ def set(self, value: bool, *, callback: bool = False) -> None:
             self.feature.command(value)
         if self.get() == bool(value):
             return None
-        self.update(f"{self.state.split('-', maxsplit=1)}-{'on' if value else 'off'}")
+        self.update(f"{self.state.split('-', maxsplit=1)[0]}-{'on' if value else 'off'}")
 
 
 class ToggleButton(virtual.Widget):
@@ -611,7 +611,7 @@ def set(self, value: bool, *, callback: bool = False) -> None:
             self.feature.command(value)
         if self.get() == bool(value):
             return
-        self.update(f"{self.state.split('-', maxsplit=1)}-{'on' if value else 'off'}")
+        self.update(f"{self.state.split('-', maxsplit=1)[0]}-{'on' if value else 'off'}")
 
 
 class RadioBox(virtual.Widget):
@@ -1179,6 +1179,7 @@ def __init__(
         placeholder: str = "",
         show: str | None = None,
         limit: int = math.inf,
+        default: str | None = None,
         command: collections.abc.Callable[[bool], typing.Any] | None = None,
         image: enhanced.PhotoImage | None = None,
         name: str | None = None,
@@ -1204,6 +1205,7 @@ def __init__(
         * `show`: display a value that obscures the original content
         * `placeholder`: a placeholder for the prompt
         * `limit`: limit on the number of characters
+        * `default`: default value of the widget
         * `command`: a function that is triggered when the button is pressed
         * `image`: image of the widget
         * `name`: name of the widget
@@ -1236,6 +1238,8 @@ def __init__(
         self.format = format_spec
         self.step = step
         self.feature = features.SpinBoxFeature(self, command=command)
+        if default is not None:
+            self.set(default)
 
     def change(self, up: bool) -> None:
         """Try change the current value"""