Index: sources/gui/qml/components/Slider.qml
===================================================================
diff -u -r51c8036de03623725353aad8e913b32804e93b5e -r9419d09af625fa3b1291da079df2df0589358ff6
--- sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision 51c8036de03623725353aad8e913b32804e93b5e)
+++ sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision 9419d09af625fa3b1291da079df2df0589358ff6)
@@ -38,7 +38,7 @@
 
     property alias  handler            : _handler
     property alias  handlerColor       : _handler.color
-    property bool   handlerVisible     : _handler.visible
+    property alias  handlerVisible     : _handler.visible
 
     property alias  diameter           : _handler.diameter