diff --git a/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.cpp b/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.cpp
index 4f958d59f6e..c7e1ab192c2 100644
--- a/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.cpp
+++ b/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.cpp
@@ -28,18 +28,34 @@
 
 #include "richtexteditor/richtexteditor.h"
 
+#include "QStringListModel"
+
 namespace QmlDesigner {
 
-AnnotationCommentTab::AnnotationCommentTab(QWidget *parent) :
-    QWidget(parent),
-    ui(new Ui::AnnotationCommentTab)
+AnnotationCommentTab::AnnotationCommentTab(QWidget *parent)
+    : QWidget(parent)
+    , ui(new Ui::AnnotationCommentTab)
 {
     ui->setupUi(this);
 
     m_editor = new RichTextEditor;
     ui->formLayout->setWidget(3, QFormLayout::FieldRole, m_editor);
 
-    connect(ui->titleEdit, &QLineEdit::textEdited,
+    ui->titleEdit->setModel(new QStringListModel{QStringList{"Description",
+                                                             "Display Condition",
+                                                             "helper_lines"
+                                                             "highlight"
+                                                             "project author",
+                                                             "project confirmed",
+                                                             "project developer",
+                                                             "project distributor",
+                                                             "project modified",
+                                                             "project type"
+                                                             "project version",
+                                                             "Screen Description"
+                                                             "Section"}});
+
+    connect(ui->titleEdit, &QComboBox::currentTextChanged,
             this, &AnnotationCommentTab::commentTitleChanged);
 }
 
@@ -52,7 +68,7 @@ Comment AnnotationCommentTab::currentComment() const
 {
     Comment result;
 
-    result.setTitle(ui->titleEdit->text().trimmed());
+    result.setTitle(ui->titleEdit->currentText().trimmed());
     result.setAuthor(ui->authorEdit->text().trimmed());
     result.setText(m_editor->richText().trimmed());
 
@@ -77,7 +93,7 @@ void AnnotationCommentTab::setComment(const Comment &comment)
 
 void AnnotationCommentTab::resetUI()
 {
-    ui->titleEdit->setText(m_comment.title());
+    ui->titleEdit->setCurrentText(m_comment.title());
     ui->authorEdit->setText(m_comment.author());
     m_editor->setRichText(m_comment.deescapedText());
 
diff --git a/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.ui b/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.ui
index 4a69703d57d..b3a9a85e6c9 100644
--- a/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.ui
+++ b/src/plugins/qmldesigner/components/annotationeditor/annotationcommenttab.ui
@@ -24,7 +24,11 @@
       </widget>
      </item>
      <item row="1" column="1">
-      <widget class="QLineEdit" name="titleEdit"/>
+      <widget class="QComboBox" name="titleEdit">
+       <property name="editable">
+        <bool>true</bool>
+       </property>
+      </widget>
      </item>
      <item row="3" column="0">
       <widget class="QLabel" name="textLabel">
diff --git a/src/plugins/qmldesigner/qmlpreviewplugin/qmlpreviewplugin.cpp b/src/plugins/qmldesigner/qmlpreviewplugin/qmlpreviewplugin.cpp
index ac0f30118d5..e0d55eb21a1 100644
--- a/src/plugins/qmldesigner/qmlpreviewplugin/qmlpreviewplugin.cpp
+++ b/src/plugins/qmldesigner/qmlpreviewplugin/qmlpreviewplugin.cpp
@@ -84,7 +84,9 @@ QmlPreviewPlugin::QmlPreviewPlugin()
     if (s_previewPlugin) {
         auto fpsAction = new FpsAction;
         designerActionManager.addDesignerAction(fpsAction);
-        s_previewPlugin->setProperty("fpsHandler", QVariant::fromValue<QmlPreview::QmlPreviewFpsHandler>(FpsLabelAction::fpsHandler));
+        bool hasFpsHandler =
+            s_previewPlugin->setProperty("fpsHandler", QVariant::fromValue<QmlPreview::QmlPreviewFpsHandler>(FpsLabelAction::fpsHandler));
+        QTC_CHECK(hasFpsHandler);
         auto switchLanguageAction = new SwitchLanguageAction;
         designerActionManager.addDesignerAction(switchLanguageAction);
     }
@@ -132,7 +134,9 @@ void QmlPreviewPlugin::setQmlFile()
     if (s_previewPlugin) {
         const Utils::FilePath qmlFileName =
                 QmlDesignerPlugin::instance()->currentDesignDocument()->fileName();
-        s_previewPlugin->setProperty("previewedFile", qmlFileName.toString());
+        bool hasPreviewedFile =
+            s_previewPlugin->setProperty("previewedFile", qmlFileName.toString());
+        QTC_CHECK(hasPreviewedFile);
     }
 }
 
@@ -146,14 +150,18 @@ float QmlPreviewPlugin::zoomFactor()
 
 void QmlPreviewPlugin::setZoomFactor(float zoomFactor)
 {
-    if (s_previewPlugin)
-        s_previewPlugin->setProperty("zoomFactor", zoomFactor);
+    if (s_previewPlugin) {
+        bool hasZoomFactor = s_previewPlugin->setProperty("zoomFactor", zoomFactor);
+        QTC_CHECK(hasZoomFactor);
+    }
 }
 
 void QmlPreviewPlugin::setLanguageLocale(const QString &locale)
 {
-    if (auto s_previewPlugin = getPreviewPlugin())
-        s_previewPlugin->setProperty("locale", locale);
+    if (auto s_previewPlugin = getPreviewPlugin()) {
+        bool hasLocaleIsoCode = s_previewPlugin->setProperty("localeIsoCode", locale);
+        QTC_CHECK(hasLocaleIsoCode);
+    }
 }
 
 QObject *QmlPreviewPlugin::getPreviewPlugin()
diff --git a/src/plugins/qmlprojectmanager/qmlmultilanguageaspect.cpp b/src/plugins/qmlprojectmanager/qmlmultilanguageaspect.cpp
index 3abb0f4659f..997850f1529 100644
--- a/src/plugins/qmlprojectmanager/qmlmultilanguageaspect.cpp
+++ b/src/plugins/qmlprojectmanager/qmlmultilanguageaspect.cpp
@@ -95,7 +95,7 @@ void QmlMultiLanguageAspect::setCurrentLocale(const QString &locale)
         return;
     m_currentLocale = locale;
     if (auto previewPlugin = getPreviewPlugin())
-        previewPlugin->setProperty("locale", locale);
+        previewPlugin->setProperty("localeIsoCode", locale);
 }
 
 QString QmlMultiLanguageAspect::currentLocale() const