Index: sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml
===================================================================
diff -u -ra0394b19a44acc10190b13aa45fa83defb4b00c9 -r9e583bc0edb0dd929a03132cc57c252d0bd5aaac
--- sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml	(.../TreatmentUltrafiltrationItem.qml)	(revision a0394b19a44acc10190b13aa45fa83defb4b00c9)
+++ sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml	(.../TreatmentUltrafiltrationItem.qml)	(revision 9e583bc0edb0dd929a03132cc57c252d0bd5aaac)
@@ -27,11 +27,10 @@
 Item { id: _root
     objectName: "_TreatmentUltrafiltration"
     anchors.fill: parent
+    visible     : _treatmentAdjustmentUltrafiltrationStart.visible
+                  || _treatmentAdjustmentUltrafiltrationEdit.visible
+                  || _treatmentAdjustmentUltrafiltrationConfirm.visible
 
-    // - 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() {
         _treatmentAdjustmentUltrafiltrationStart.open()
     }
@@ -101,9 +100,11 @@
                 _treatmentAdjustmentUltrafiltrationConfirm.ultrafiltrationVolume    = vTreatmentAdjustmentUltrafiltrationEdit.volume
                 _treatmentAdjustmentUltrafiltrationConfirm.ultrafiltrationRate      = vTreatmentAdjustmentUltrafiltrationEdit.rate
 
-                _treatmentAdjustmentUltrafiltrationEdit   .close()
-                _treatmentAdjustmentUltrafiltrationConfirm.reset()
-                _treatmentAdjustmentUltrafiltrationConfirm.open ()
+                if (_root.visible) {
+                    _treatmentAdjustmentUltrafiltrationEdit   .close()
+                    _treatmentAdjustmentUltrafiltrationConfirm.reset()
+                    _treatmentAdjustmentUltrafiltrationConfirm.open()
+                }
             } else {
                 _treatmentAdjustmentUltrafiltrationEdit.notification.text = vTreatmentAdjustmentUltrafiltrationEdit.text()
             }
Index: sources/gui/qml/pages/treatment/adjustments/TreatmentAdjustmentUltrafiltrationConfirm.qml
===================================================================
diff -u -r7208690c23bf7a801437b86902f2e04d173d659f -r9e583bc0edb0dd929a03132cc57c252d0bd5aaac
--- sources/gui/qml/pages/treatment/adjustments/TreatmentAdjustmentUltrafiltrationConfirm.qml	(.../TreatmentAdjustmentUltrafiltrationConfirm.qml)	(revision 7208690c23bf7a801437b86902f2e04d173d659f)
+++ sources/gui/qml/pages/treatment/adjustments/TreatmentAdjustmentUltrafiltrationConfirm.qml	(.../TreatmentAdjustmentUltrafiltrationConfirm.qml)	(revision 9e583bc0edb0dd929a03132cc57c252d0bd5aaac)
@@ -164,6 +164,6 @@
             font.weight     : Font.Medium
         }
 
-        onClicked: confirmVolumeClicked(_root.ultrafiltrationVolume)
+        onClicked: confirmVolumeClicked(_root.ultrafiltrationVolume.toFixed(Variables.ultrafiltrationPrecision))
     }
 }