Регрессия. Надписи не должны исчезать и появляться

scenes/контроль/контроль.tscn

@@ -67,7 +67,7 @@ func on_serv_changed(u, pribor_node, _pribor_meta): pribor_node.state = int(u.se
 func on_mode_changed():
     clean_pribor_items()
     reset_pribor_buttons()
-    $chk_show_functional.visible = false
+    $chk_show_functional.disabled = true
     $chk_show_functional.button_pressed = false
 
 
@@ -142,6 +142,7 @@ func clean_pribor_items():
 func on_pribor_press(pribor_path, header_text, pribor_node):
     if cur_pribor_node:
         cur_pribor_node.show_functional = false
+        $chk_show_functional.disabled = false
         $chk_show_functional.button_pressed = false
     cur_pribor_node = pribor_node
     clean_pribor_items()
@@ -154,7 +155,7 @@ func on_pribor_press(pribor_path, header_text, pribor_node):
         push_error('экземпляр не создан: \\\"%s\\\" (%s)' % [pribor_path, header_text])
         return
     $lbl_header.text = header_text
-    $chk_show_functional.visible = true
+    $chk_show_functional.disabled = false
     var meta_list = pribor_node.get_meta_list()
     if meta_list.find('unit_name') > -1:
         var unit_name = pribor_node.get_meta('unit_name')
@@ -219,8 +220,7 @@ func _on_gui_input(event: InputEvent) -> void:
         clean_pribor_items()
         cur_pribor_node = null
         $chk_show_functional.button_pressed = false
-        $chk_show_functional.visible = false
-        $lbl_header.text = \"\"
+        $chk_show_functional.disabled = true
 
 
 func on_control_button_pressed(state: bool) -> void:
@@ -1911,12 +1911,11 @@ horizontal_alignment = 1
 vertical_alignment = 1
 
 [node name="chk_show_functional" type="CheckButton" parent="."]
-visible = false
 layout_mode = 0
-offset_left = 1028.0
-offset_top = 26.0
-offset_right = 1407.0
-offset_bottom = 60.0
+offset_left = 1029.0
+offset_top = 15.0
+offset_right = 1408.0
+offset_bottom = 49.0
 theme_override_font_sizes/font_size = 22
 text = "Показть функциональную схему Э2"
 flat = true