Index: sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -r65bff6538499d8a7592f5b664982b69d90d102c2
--- sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml	(.../TreatmentUltrafiltrationItem.qml)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/gui/qml/pages/treatment/TreatmentUltrafiltrationItem.qml	(.../TreatmentUltrafiltrationItem.qml)	(revision 65bff6538499d8a7592f5b664982b69d90d102c2)
@@ -27,6 +27,11 @@
 Item { id: _root
     objectName: "_TreatmentUltrafiltration"
     anchors.fill: parent
+
+    // - 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() {
         if ( isUFRunning ) {
             _treatmentAdjustmentUltrafiltrationStart .open()