Index: sources/gui/qml/dialogs/UfVolumeAdjustment.qml
===================================================================
diff -u -rfdddcd8b25b5acc99f8c044c998af0e95752063c -rcd8ab55ca1d9b62fc057b3cec9a24c5b5979f38b
--- sources/gui/qml/dialogs/UfVolumeAdjustment.qml	(.../UfVolumeAdjustment.qml)	(revision fdddcd8b25b5acc99f8c044c998af0e95752063c)
+++ sources/gui/qml/dialogs/UfVolumeAdjustment.qml	(.../UfVolumeAdjustment.qml)	(revision cd8ab55ca1d9b62fc057b3cec9a24c5b5979f38b)
@@ -101,6 +101,7 @@
         width       : Variables.defaultButtonWidth
         height      : Variables.defaultButtonHeight
         enabled     : _preWeight.isActive && _estimatedTargetWeight.isActive
+        visible     : ! vTreatmentCreate.parametersValidated
 
         anchors {
             top     : undefined