BusyIndicator does not show up in Fusion style

BusyIndicator with its property "running" initially set to false does not show up when its property is set to true. The bug does not reproduce for default style.

Steps:

1. QQuickStyle::setStyle("Fusion");
   

2. import QtQuick.Window 2.2
   import QtQuick 2.10
   import QtQuick.Controls 2.3
   import QtQuick.Layouts 1.3
   
   
   Window {
       visible: true
       width: 640
       height: 480
       title: qsTr("Hello World")
   
   
       property bool r: false
   
   
       ColumnLayout
       {
           Button
           {
               text: "test"
               onClicked: r = !r
           }
   
   
           BusyIndicator
           {
               running: r
           }
       }
   }