Исправление. Состояние отображается не верно, если у экземпляра в сцене установлено значение отличное от исходного

scenes/button-flat/nine-patch-button.gd

@@ -3,18 +3,17 @@
 extends PanelContainer
 
 func set_text(val: String): $button.set_text(val)
-func set_pressed(val: bool): $button.set_pressed(val)
 func set_disabled(val: bool): disabled = val
 func get_text(): return $button.get_text()
 func is_pressed(): return $button.is_pressed()
 func is_toggle_mode(): return $button.is_toggle_mode()
 
+var _pressed: = false
 
 @export var texture_state0: Texture2D = preload('res://data/кнопка-квадрат-0.png'):
     set(val):
         texture_state0 = val
-        if is_inside_tree():
-            $state.set_texture(val)
+        $state.set_texture(val)
 
 
 @export var texture_state1: Texture2D = preload('res://data/кнопка-квадрат-1.png'):
@@ -27,40 +26,43 @@ func is_toggle_mode(): return $button.is_toggle_mode()
 @export var strips_rotation: float = 0.0:
     set(val):
         strips_rotation = val
-        if is_inside_tree():
-            $back.strips_rotation = deg_to_rad(val)
+        $back.strips_rotation = deg_to_rad(val)
 
 
 @export var text: String = '':
     set(val):
         text = val
-        if is_inside_tree():
-            $button.set_text(val)
+        $button.set_text(val)
 
 
 @export var disabled: bool = false:
     set(val):
         disabled = val
-        if is_inside_tree():
-            $button.set_disabled(val)
-            $back.disabled = val
-            $state.modulate.a = 0.5 if val else 1.0
+        $button.set_disabled(val)
+        $back.disabled = val
+        $state.modulate.a = 0.5 if val else 1.0
 
 
 @export var pressed: bool = false:
     set(val):
         pressed = val
+        _pressed = val
         if is_inside_tree():
             $button.set_pressed(val)
+            _on_button_toggled(val)
 
 
-@export var toggle_mode: bool = false:
+@export var toggle_mode: bool = true:
     set(val):
         toggle_mode = val
         if is_inside_tree():
             $button.set_toggle_mode(val)
 
 
+func set_pressed(val: bool):
+    pressed = val
+
+
 func button_connect(button_signal: String, proc: Callable):
     var rc = $button.connect(button_signal, proc)
     if rc != Error.OK:
@@ -75,8 +77,8 @@ func _on_resized() -> void:
 func _enter_tree() -> void:
     $back.scale = size
     $back.material.set('shader_parameter/scale', size / Vector2(20.0, 20.0))
-    $button.set_toggle_mode(true)
     $button.connect('toggled', _on_button_toggled)
+    pressed = _pressed
 
 
 func _exit_tree() -> void: