Fix for property

app/qml/main.qml

@@ -114,12 +114,13 @@ Window {
 
     Ui.Dialog {
         id: progressDialog
-        //icon: StandardIcon.Warning
+        //icon: StandardIcon.NoIcon
         rejectButton.text: qsTr("Cancel")
         rejectButton.onClicked: Qt.quit()
         property alias progress: progressBar.value
         property alias progressText: progressText.text
         content: ColumnLayout {
+            anchors.fill: parent
             spacing: 8
             ProgressBar {
                 id: progressBar

app/qml/ui/Dialog.qml

@@ -34,7 +34,7 @@ ColumnLayout {
             source: ""
             width: 32
             height: width
-            visible: source ? true : false
+            visible: source.toString() ? true : false
         }
         ColumnLayout {
             Layout.fillWidth: true