Index: sources/gui/qml/components/MainMenu.qml
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -r65bff6538499d8a7592f5b664982b69d90d102c2
--- sources/gui/qml/components/MainMenu.qml	(.../MainMenu.qml)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/gui/qml/components/MainMenu.qml	(.../MainMenu.qml)	(revision 65bff6538499d8a7592f5b664982b69d90d102c2)
@@ -31,6 +31,7 @@
     }
 
     property var            titles          : []
+    property var            visibleItems    : []
     property bool           hidden          : false
     property int            position        : MainMenu.Position.Bottom
     property bool           hasRightText    : false
@@ -54,8 +55,17 @@
         }
     }
 
-    onCurrentIndexChanged: itemPressed(currentIndex)
+    function isItemVisible      ( vIndex ) {
+        return visibleItems     [ vIndex ] !== false // used "!== false" to cover undefined as true.
+    }
 
+    function emit_itemPressed   ( vIndex ) {
+        if ( isItemVisible      ( vIndex ) )
+            itemPressed         ( vIndex )
+    }
+
+    onCurrentIndexChanged: emit_itemPressed(currentIndex)
+
     /*!
      * this section olds somkind of the private sections of the object
      * this section is used as the calculation section whcih soppose not to be changed by user.
@@ -109,18 +119,18 @@
                 animated    : false
                 width       : partitionWidth
                 height      : parent.height
-                text.text   : modelData
+                text.text   : isItemVisible(index) ? modelData : ""     // didn't change the visibility to preserve the button location and just didn't display the title and highlihgt bar.
                 border.width: 0
                 onPressed: {
-                    itemPressed(index)
+                    emit_itemPressed(index)
                 }
             }
         }
     }
 
     // the right outer most text with vertical line as a separator
     Line {
-        visible: hasRightText
+        visible: hasRightText && isItemVisible(_rightTouchRect.index)
         orientation: Line.Orientation.Vertical
         length: parent.height - rightTextGaps
         anchors.right: _rightTouchRect.left
@@ -132,10 +142,10 @@
         visible     : hasRightText
         width       : partitionWidth + rightTextGaps
         height      : parent.height
-        text.text   : _private.rightText
+        text.text   : isItemVisible(index) ? _private.rightText : ""    // didn't change the visibility to preserve the button location and just didn't display the title and highlihgt bar.
         border.width: 0
         onPressed: {
-            itemPressed(index)
+            emit_itemPressed(index)
         }
         anchors.right: parent.right
         anchors.rightMargin: parent.rightPdding
Index: sources/gui/qml/main.qml
===================================================================
diff -u -r5dce80bb3079b3f0e6e134110e267be3277c3a8d -r65bff6538499d8a7592f5b664982b69d90d102c2
--- sources/gui/qml/main.qml	(.../main.qml)	(revision 5dce80bb3079b3f0e6e134110e267be3277c3a8d)
+++ sources/gui/qml/main.qml	(.../main.qml)	(revision 65bff6538499d8a7592f5b664982b69d90d102c2)
@@ -258,7 +258,8 @@
         function isSettings   () { _mainMenu.itemPressed(2) }
 
         hidden: true // it should be hidden by default since the landing screen changed to init and it does not have the main menu untill the POST passes.
-        titles: [ qsTr("Treatment") , qsTr("Manager") , qsTr("Settings") ]
+        titles          : [ qsTr("Treatment") , qsTr("Manager") , qsTr("Settings") ]
+        visibleItems    : [       true        ,       false     ,       true       ]
         Component.onCompleted: {
             _settingsStack.visible = false
             _managerStack .visible = false
Index: sources/gui/qml/pages/treatment/TreatmentStack.qml
===================================================================
diff -u -r5dce80bb3079b3f0e6e134110e267be3277c3a8d -r65bff6538499d8a7592f5b664982b69d90d102c2
--- sources/gui/qml/pages/treatment/TreatmentStack.qml	(.../TreatmentStack.qml)	(revision 5dce80bb3079b3f0e6e134110e267be3277c3a8d)
+++ sources/gui/qml/pages/treatment/TreatmentStack.qml	(.../TreatmentStack.qml)	(revision 65bff6538499d8a7592f5b664982b69d90d102c2)
@@ -51,16 +51,17 @@
 
     readonly property bool   isSBInProgress     : ( vHDTreatmentStates.sbRunning || vHDTreatmentStates.sbWaitPump )
 
-    readonly property bool isDialogOpened : _treatmentAdjustmentFlow.visible
-                                            || _treatmentAdjustmentPressuresLimits.visible
-                                            || _treatmentAdjustmentDuration.visible
-                                            || _treatmentUltrafiltrationItem.visible
+    readonly property bool isDialogOpened : _treatmentAdjustmentFlow            .visible
+                                         || _treatmentAdjustmentPressuresLimits .visible
+                                         || _treatmentAdjustmentDuration        .visible
+                                         || _treatmentUltrafiltrationItem       .visible
     // Components
     MainMenu            { id: _treatmentMenu
         y               : Variables.mainMenuHeight * -1
         position        : MainMenu.Position.Top
         hidden          : true
         titles          : [ qsTr("Treatment") , qsTr("Trending") , qsTr("Settings") ]
+        visibleItems    : [       true        ,       false      ,       false      ]
         spacing         :  20
         leftPdding      :  20
         rightPdding     :  50
@@ -77,11 +78,7 @@
     }
 
     TreatmentBloodPrime         { id: _treatmentBloodPrime          }
-    TreatmentUltrafiltrationItem{ id: _treatmentUltrafiltrationItem
-        // - set visible to false as init state to correctly indicate visible screens
-        // - TreatmentUltrafiltrationItem is not a ScreenItem, thus visible is true automatically
-        visible:false
-    }
+    TreatmentUltrafiltrationItem{ id: _treatmentUltrafiltrationItem }
     TreatmentHome               { id: _treatmentHome                }
 
     Connections                 { target: _treatmentHome
Index: sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -r65bff6538499d8a7592f5b664982b69d90d102c2
--- sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml	(.../TreatmentUltrafiltrationItem.qml)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml	(.../TreatmentUltrafiltrationItem.qml)	(revision 65bff6538499d8a7592f5b664982b69d90d102c2)
@@ -27,6 +27,11 @@
 Item { id: _root
     objectName: "_TreatmentUltrafiltration"
     anchors.fill: parent
+
+    // - set visible to false as init state to correctly indicate visible screens
+    // - TreatmentUltrafiltrationItem is not a ScreenItem, thus visible is true automatically
+    visible:false
+
     function open() {
         if ( isUFRunning ) {
             _treatmentAdjustmentUltrafiltrationStart .open()