Index: sources/gui/qml/pages/treatment/TreatmentSection.qml
===================================================================
diff -u -r3e682c5afdadcf4dd2006e3d975fbee58e48619e -rc2f474ff07c98aa350c445a2474976a3cf985f40
--- sources/gui/qml/pages/treatment/TreatmentSection.qml	(.../TreatmentSection.qml)	(revision 3e682c5afdadcf4dd2006e3d975fbee58e48619e)
+++ sources/gui/qml/pages/treatment/TreatmentSection.qml	(.../TreatmentSection.qml)	(revision c2f474ff07c98aa350c445a2474976a3cf985f40)
@@ -15,7 +15,10 @@
 
 // Qt
 import QtQuick 2.12
+import QtGraphicalEffects 1.12
+/* Qt6 Port: replace the above import with the following one:
 import QtQuick.Effects
+*/
 
 import "qrc:/globals"
 import "qrc:/components"
@@ -59,10 +62,22 @@
     }
 
     layer.enabled: _root.enableDropShadow
+    layer.effect: DropShadow {
+        id: _dropShadow
+        horizontalOffset: 3
+        verticalOffset: 5
+        radius: 3.0
+        samples: 7
+        color: "#50000000"
+        source: _root
+        anchors.fill: _root
+    }
+/* Qt6 Port: replace the above DropShadow with the following RectangularShadow:
     layer.effect: RectangularShadow {
         id: _dropShadow
         radius: 3.0
         color: "#50000000"
         anchors.fill: _root
     }
+*/
 }