Index: sources/gui/qml/pages/treatment/TreatmentTrends.qml
===================================================================
diff -u -r3e682c5afdadcf4dd2006e3d975fbee58e48619e -rc2f474ff07c98aa350c445a2474976a3cf985f40
--- sources/gui/qml/pages/treatment/TreatmentTrends.qml	(.../TreatmentTrends.qml)	(revision 3e682c5afdadcf4dd2006e3d975fbee58e48619e)
+++ sources/gui/qml/pages/treatment/TreatmentTrends.qml	(.../TreatmentTrends.qml)	(revision c2f474ff07c98aa350c445a2474976a3cf985f40)
@@ -15,7 +15,10 @@
 
 // Qt
 import QtQuick 2.12
+import QtGraphicalEffects 1.12
+/* Qt6 Port: replaced the above import with the following one:
 import QtQuick.Effects
+*/
 
 // Project
 //  Qml imports
@@ -57,11 +60,18 @@
         color                           : Colors.treatmentSectionHeader
         layer {
             enabled: true
+            effect: DropShadow { id: _topHeaderShadow
+            objectName      : "_topHeaderShadow"
+                horizontalOffset: 2
+                verticalOffset  : 2
+            }
+/* Qt6 Port: replace the above DropShadow with the following RectangularShadow:
             effect: RectangularShadow { id: _topHeaderShadow
                 objectName      : "_topHeaderShadow"
                 radius          : 12
                 color           : "#50000000"
             }
+*/
         }
 
         Text { id: _text