Index: sources/gui/qml/pages/pretreatment/PreTreatmentInstallStack.qml
===================================================================
diff -u -rc70815ad2b3beadf61832f2e4d12eb90d476e020 -r4c6c526a02ea5dec5c13b9a93a58627cfec2a136
--- sources/gui/qml/pages/pretreatment/PreTreatmentInstallStack.qml	(.../PreTreatmentInstallStack.qml)	(revision c70815ad2b3beadf61832f2e4d12eb90d476e020)
+++ sources/gui/qml/pages/pretreatment/PreTreatmentInstallStack.qml	(.../PreTreatmentInstallStack.qml)	(revision 4c6c526a02ea5dec5c13b9a93a58627cfec2a136)
@@ -25,15 +25,6 @@
     property int subStepIndex: PreTreatmentInstallStack.Step.BloodSetTubing
     property int    stepIndex: PreTreatmentStack.Step.Installation
 
-    onVisibleChanged: {
-        if (visible) {
-            _headerBar.activeStack = stackView
-        }
-        else {
-            stackView.initialItem = null
-        }
-    }
-
     stackView.onCurrentItemChanged: _headerBar.activeStack = stackView
 
     signal goToNextStep()
@@ -125,5 +116,8 @@
             _headerBar.activeStack = stackView
             initStack()
         }
+        else {
+            stackView.initialItem = null
+        }
     }
 }