Index: sources/gui/qml/components/ProgressBar.qml
===================================================================
diff -u -r9391d4058233e096350d9dc3ced79aed8ed93b38 -r79bf4dda5c027044ebd0014e7deac42a058a7fcf
--- sources/gui/qml/components/ProgressBar.qml	(.../ProgressBar.qml)	(revision 9391d4058233e096350d9dc3ced79aed8ed93b38)
+++ sources/gui/qml/components/ProgressBar.qml	(.../ProgressBar.qml)	(revision 79bf4dda5c027044ebd0014e7deac42a058a7fcf)
@@ -14,7 +14,6 @@
 
 // Qt
 import QtQuick 2.12
-import QtQuick.Controls 2.12
 
 // Project
 //  Qml imports
@@ -25,13 +24,16 @@
  */
 RangeRect { id: _root
     property alias  value       : _progressRect.value
-    property alias  valueEx     : _progressRectEx.value
 
     property alias  color       : _progressRect.color
     property alias  bgColor     : _root.color
 
     property alias  marker      : _marker
+    property alias  markerHeight: _marker.height
 
+    property alias  minimum     : _root.minimum
+    property alias  maximum     : _root.maximum
+
     height          : Variables.progressbarHeight
 
     minimum         : 0
@@ -40,35 +42,29 @@
     minText.visible : true
     maxText.visible : true
 
-
-    ProgressRect { id: _progressRectEx
-        visible : value
-
-        minimum : _root.minimum
-        maximum : _root.maximum
-        value   : _root.valueEx
-
-        color   : Colors.highlightMedProgressBar
-        maxText.visible: visible
-        margin  : 0
-    }
-
+    // Since this Component is the base Component of the ProgressBarEx
+    // we need to use the z order
+    // to order the parent object (ProgressBar) Components
+    // in the child(ProgressBarEx)
     ProgressRect { id: _progressRect
+        z: 1 // Main ProgressBar Rect, z order in the gui
         minimum : _root.minimum
         maximum : _root.maximum
         value   : _root.value
 
         color   : Colors.highlightProgressBar
 
-        RangeMarker { id: _marker
-            anchors {
-                left    : parent.right
-            }
+    }
 
-            height      : Variables.rangeMarkerHeight
-            hasHandle   : true
-
-            value       : _root.value
+    RangeMarker { id: _marker
+        z : 3 // ProgressBar marker should be on top of the all ProgressBars z order in the gui
+        anchors {
+            left    : _progressRect.right
         }
+
+        height      : Variables.rangeMarkerHeight
+        hasHandle   : true
+
+        value       : _root.value
     }
 }