--- a/src/widgets/widgets/qcombobox.cpp	2023-11-17 06:15:29
+++ b/src/widgets/widgets/qcombobox.cpp	2024-02-21 11:34:00
@@ -715,6 +715,23 @@
 bool QComboBoxPrivateContainer::eventFilter(QObject *o, QEvent *e)
 {
     switch (e->type()) {
+    case QEvent::KeyPress: {
+        QKeyEvent *keyEvent = static_cast<QKeyEvent *>(e);
+        switch (keyEvent->key()) {
+        case Qt::Key_Enter:
+        case Qt::Key_Return:
+#ifdef QT_KEYPAD_NAVIGATION
+        case Qt::Key_Select:
+#endif
+            if (isVisible() && view->currentIndex().isValid() && view->currentIndex().flags().testFlag(Qt::ItemIsEnabled)) {
+                keyEvent->accept();
+                combo->hidePopup();
+                emit itemSelected(view->currentIndex());
+                return true;
+            }
+        }
+        break;
+    }
     case QEvent::ShortcutOverride: {
         QKeyEvent *keyEvent = static_cast<QKeyEvent*>(e);
         switch (keyEvent->key()) {
@@ -724,9 +741,7 @@
         case Qt::Key_Select:
 #endif
             if (view->currentIndex().isValid() && view->currentIndex().flags().testFlag(Qt::ItemIsEnabled)) {
-                combo->hidePopup();
                 keyEvent->accept();
-                emit itemSelected(view->currentIndex());
             }
             return true;
         case Qt::Key_Down: