diff --git a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.cpp b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.cpp
index d6080f4e90f..393f6840c9d 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.cpp
+++ b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage.cpp
@@ -1157,12 +1157,16 @@ QStandardItemModel *ListField::itemModel()
     return m_itemModel;
 }
 
-void ListField::selectRow(int row)
+bool ListField::selectRow(int row)
 {
-    auto index = itemModel()->index(row, 0);
+    QModelIndex index = itemModel()->index(row, 0);
+    if (!index.isValid())
+        return false;
+
     selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
 
     this->updateIndex();
+    return true;
 }
 
 QItemSelectionModel *ListField::selectionModel() const
@@ -1271,12 +1275,15 @@ QVariant ComboBoxField::toSettings() const
     return {};
 }
 
-void ComboBoxField::selectRow(int row)
+bool ComboBoxField::selectRow(int row)
 {
-    ListField::selectRow(row);
+    if (!ListField::selectRow(row))
+        return false;
 
     auto w = qobject_cast<QComboBox *>(widget());
     w->setCurrentIndex(row);
+
+    return true;
 }
 
 int ComboBoxField::selectedRow() const
diff --git a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h
index ed89746d0b2..db8a1b06fb7 100644
--- a/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h
+++ b/src/plugins/projectexplorer/jsonwizard/jsonfieldpage_p.h
@@ -282,7 +282,7 @@ public:
     ~ListField() override;
 
     QStandardItemModel *model() { return m_itemModel; }
-    virtual void selectRow(int row);
+    virtual bool selectRow(int row);
 
 protected:
     bool parseData(const QVariant &data, QString *errorMessage) override;
@@ -351,7 +351,7 @@ private:
     }
 
 public:
-    void selectRow(int row) override;
+    bool selectRow(int row) override;
     int selectedRow() const;
 };
 
diff --git a/src/plugins/studiowelcome/createproject.cpp b/src/plugins/studiowelcome/createproject.cpp
index 1b6dd93e9d7..ce3b83945fb 100644
--- a/src/plugins/studiowelcome/createproject.cpp
+++ b/src/plugins/studiowelcome/createproject.cpp
@@ -68,6 +68,7 @@ void CreateProject::processFieldPage(ProjectExplorer::JsonFieldPage *page)
     auto widthField = dynamic_cast<ProjectExplorer::LineEditField *>(page->jsonField("CustomScreenWidth"));
     auto heightField = dynamic_cast<ProjectExplorer::LineEditField *>(page->jsonField("CustomScreenHeight"));
 
+    // TODO: use m_wizard to set these text items?
     if (widthField && heightField) {
         if (!m_customWidth.isEmpty() && !m_customHeight.isEmpty()) {
             widthField->setText(m_customWidth);
diff --git a/src/plugins/studiowelcome/qdsnewdialog.cpp b/src/plugins/studiowelcome/qdsnewdialog.cpp
index 83a966caeb0..0324a7de93c 100644
--- a/src/plugins/studiowelcome/qdsnewdialog.cpp
+++ b/src/plugins/studiowelcome/qdsnewdialog.cpp
@@ -170,17 +170,26 @@ void QdsNewDialog::onProjectCanBeCreatedChanged(bool value)
     emit fieldsValidChanged();
 }
 
+void QdsNewDialog::updateScreenSizes()
+{
+    int index = m_wizard.screenSizeIndex(m_currentPreset->screenSizeName);
+    if (index > -1) {
+        setScreenSizeIndex(index);
+    } else {
+        index = m_screenSizeModel->appendItem(m_currentPreset->screenSizeName);
+        setScreenSizeIndex(index);
+    }
+
+    m_screenSizeModel->reset();
+}
+
 void QdsNewDialog::onWizardCreated(QStandardItemModel *screenSizeModel, QStandardItemModel *styleModel)
 {
     m_screenSizeModel->setBackendModel(screenSizeModel);
     m_styleModel->setBackendModel(styleModel);
 
     if (m_qmlDetailsLoaded) {
-        int index = m_wizard.screenSizeIndex(m_currentPreset->screenSizeName);
-        if (index > -1)
-            setScreenSizeIndex(index);
-
-        m_screenSizeModel->reset();
+        updateScreenSizes();
 
         emit haveVirtualKeyboardChanged();
         emit haveTargetQtVersionChanged();
@@ -288,11 +297,7 @@ void QdsNewDialog::setWizardFactories(QList<Core::IWizardFactory *> factories_,
     emit projectLocationChanged(); // So that QML knows to update the field
 
     if (m_qmlDetailsLoaded) {
-        int index = m_wizard.screenSizeIndex(m_currentPreset->screenSizeName);
-        if (index > -1)
-            setScreenSizeIndex(index);
-
-        m_screenSizeModel->reset();
+        updateScreenSizes();
     }
 
     if (m_qmlStylesLoaded)
@@ -334,9 +339,9 @@ void QdsNewDialog::accept()
         .execute();
 
     PresetItem item = m_wizard.preset();
-    QString screenSize = m_wizard.screenSizeName(m_qmlScreenSizeIndex);
+    QString customSizeName = m_qmlCustomWidth + " x " + m_qmlCustomHeight;
 
-    m_recentsStore.add(item.categoryId, item.name, screenSize);
+    m_recentsStore.add(item.categoryId, item.name, customSizeName);
 
     m_dialog->close();
     m_dialog->deleteLater();
diff --git a/src/plugins/studiowelcome/qdsnewdialog.h b/src/plugins/studiowelcome/qdsnewdialog.h
index 476750e5408..a4afa69e927 100644
--- a/src/plugins/studiowelcome/qdsnewdialog.h
+++ b/src/plugins/studiowelcome/qdsnewdialog.h
@@ -131,6 +131,8 @@ private:
 
     QString projectDescription() const { return m_qmlProjectDescription; }
 
+    void updateScreenSizes();
+
 private slots:
     void onDeletingWizard();
     void onWizardCreated(QStandardItemModel *screenSizeModel, QStandardItemModel *styleModel);
diff --git a/src/plugins/studiowelcome/screensizemodel.h b/src/plugins/studiowelcome/screensizemodel.h
index 597811146e7..0bde90c2690 100644
--- a/src/plugins/studiowelcome/screensizemodel.h
+++ b/src/plugins/studiowelcome/screensizemodel.h
@@ -87,6 +87,12 @@ public:
         return {};
     }
 
+    int appendItem(const QString &text)
+    {
+        m_backendModel->appendRow(new QStandardItem{text});
+        return rowCount(QModelIndex{}) - 1;
+    }
+
     QHash<int, QByteArray> roleNames() const override
     {
         if (m_backendModel)