Index: sources/gui/qml/components/Slider.qml
===================================================================
diff -u -r00ed70b03062c6f4fa1bfd2e515efd777e086f85 -r83b9d737cd495b34a7b42f5409962a9442f3b8f4
--- sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision 00ed70b03062c6f4fa1bfd2e515efd777e086f85)
+++ sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision 83b9d737cd495b34a7b42f5409962a9442f3b8f4)
@@ -1,13 +1,13 @@
 /*!
  *
- * Copyright (c) 2020-2023 Diality Inc. - All Rights Reserved.
+ * Copyright (c) 2020-2024 Diality Inc. - All Rights Reserved.
  * \copyright
  * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
  * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
  *
  * \file    Slider.qml
  * \author  (last)      Behrouz NematiPour
- * \date    (last)      31-Mar-2023
+ * \date    (last)      26-Jan-2024
  * \author  (original)  Behrouz NematiPour
  * \date    (original)  18-Mar-2020
  *
@@ -25,6 +25,7 @@
  */
 RangeRect { id: _root
     property real   value              : _progressRect.value
+    property real   defaultValue       : _root.minimum
 
     property real   step               : 1
     property bool   stepSnap           : false
@@ -57,6 +58,8 @@
     signal handleSelected()
     signal sliderSelected()
 
+    onDefaultValueChanged: refreshValue()
+
     // this function shall be used in case that any external value is forced to be set for the slider
     // like the OFF switch wants to externally set the slider value and bypass slider controlls and checks.
     // same is used in the main treatment Blood,dialyzer sliders to be set to the current value when get in to adjustment screen.
@@ -108,19 +111,29 @@
         }
     }
 
-    onIsActiveChanged: {
-        setActiveVisuals(isActive)
-
+    /*
+      refreshValue() re-evaluates the _root.value and _progressRect.value based on the
+      current active state. This function is used when the defaultValue property or
+      isActive property changes.
+    */
+    function refreshValue() {
         // value is assigned a different value based on active-ness of the slider
         // This is to resolve the use of slider with a switch and arrows enabled.
         // It allows correct behavior when using arrow on a first initialize increment of
         // the slider when the slider has inActiveZero to true.
         if(!isActive) {
-            _root.value = inActiveZero ? 0 : minimum
+            _root.value = inActiveZero ? 0 : _root.defaultValue
         } else {
-            _root.value = _progressRect.value = minimum
+            _root.value = _root.defaultValue
         }
 
+        // need to set the value of progressRect to reflect handle position
+        _progressRect.value = _root.defaultValue
+    }
+
+    onIsActiveChanged: {
+        setActiveVisuals(isActive)
+        refreshValue () // re-evaluate values
         activeChanged() // emit
     }
 
@@ -176,7 +189,9 @@
         let mMinimum = Number(_root.minimum.toFixed(decimal))
         let mMaximum = Number(_root.maximum.toFixed(decimal))
 
-        if(x < _handler.width) {
+        // the center of the handler is aligned on the snap point and half width shall be used to set as min not the entire width.
+        // also half of the hadler is out of slider min position when set on min, which proves the same as above.
+        if(x < ( _handler.width / 2 ) ) {
             // The outside of the slider, lower bound case
             return mMinimum
         }