Index: sources/gui/qml/compounds/TreatmentAdjustmentUltrafiltrationMetrics.qml
===================================================================
diff -u -rec73ac3ed13ada1998d3c3746cefa82bbbef5645 -rc2f474ff07c98aa350c445a2474976a3cf985f40
--- sources/gui/qml/compounds/TreatmentAdjustmentUltrafiltrationMetrics.qml	(.../TreatmentAdjustmentUltrafiltrationMetrics.qml)	(revision ec73ac3ed13ada1998d3c3746cefa82bbbef5645)
+++ sources/gui/qml/compounds/TreatmentAdjustmentUltrafiltrationMetrics.qml	(.../TreatmentAdjustmentUltrafiltrationMetrics.qml)	(revision c2f474ff07c98aa350c445a2474976a3cf985f40)
@@ -61,7 +61,10 @@
         width       : _left.width
         label       : qsTr("UF Volume Goal")
         unit        : Variables.unitVolume
+        value       : _root.rightValue.toFixed(Variables.ultrafiltrationPrecision)
+/* Qt6 Port: replace the above line with the following line:
         value       : _root.rightValue?.toFixed(Variables.ultrafiltrationPrecision) ?? ""
+*/
         valueColor  : Colors.fluidText
     }
 }