Fix mouse usage of locator popup on some systems

The logic to not hide the popup if it got active was lost in
e133ee89

Change-Id: Ic3af147194f7ad18d510e827db1d5804e48e1f97
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/coreplugin/locator/locatorwidget.cpp

@@ -359,6 +359,7 @@ QSize LocatorPopup::preferredSize()
 
 void TopLeftLocatorPopup::inputLostFocus()
 {
+    if (!isActiveWindow())
         hide();
 }
 
@@ -391,7 +392,8 @@ LocatorPopup::LocatorPopup(LocatorWidget *locatorWidget, QWidget *parent)
     connect(locatorWidget, &LocatorWidget::parentChanged, this, &LocatorPopup::updateWindow);
     connect(locatorWidget, &LocatorWidget::showPopup, this, &LocatorPopup::show);
     connect(locatorWidget, &LocatorWidget::hidePopup, this, &LocatorPopup::close);
-    connect(locatorWidget, &LocatorWidget::lostFocus, this, &LocatorPopup::inputLostFocus);
+    connect(locatorWidget, &LocatorWidget::lostFocus, this, &LocatorPopup::inputLostFocus,
+            Qt::QueuedConnection);
     connect(locatorWidget, &LocatorWidget::selectRow, m_tree, [this](int row) {
         m_tree->setCurrentIndex(m_tree->model()->index(row, 0));
     });