Index: sources/gui/qml/pages/MainStack.qml
===================================================================
diff -u -rac23b968f565c2beeb153ca2d554b8f868634512 -r5c21e83a3fdc897cb99ac62e1cec0213f411cd73
--- sources/gui/qml/pages/MainStack.qml	(.../MainStack.qml)	(revision ac23b968f565c2beeb153ca2d554b8f868634512)
+++ sources/gui/qml/pages/MainStack.qml	(.../MainStack.qml)	(revision 5c21e83a3fdc897cb99ac62e1cec0213f411cd73)
@@ -48,12 +48,7 @@
     PreTreatmentCreateStack         { id: _preTreatmentCreateStack          }
     PreTreatmentStack               { id: _preTreatmentStack                }
     // In TreatmentStack
-    TreatmentStack                  { id: _treatmentStack
-        // please be careful about the _root.pop.
-        // since TreatmentStack is a stack, just calling a pop will call the pop function of the TreatmentStack not MainStack.
-        // but _mainHome belongs to MainStack.
-        onBackClicked:  _root.pop ( _mainHome )
-    }
+    TreatmentStack                  { id: _treatmentStack                   }
 
     // End Treatment
     EndTreatmentRinsebackStack      { id: _endTreatmentRinsebackStack       }