Comment 16 for bug 1599771

The real cause here is we rely on focusOut(In)Event to check for activeFocus item. but the any check of ActiveFocus (hasActiveFocus or window->activeFocusItem) inside focusout/in event give incorrect result.

when another item is focused(location bar), window->activeFocusItem() return null not the new activeFocus Item.

While check for activeFocus item is consistent Once we get ItemChanged event.
http://doc.qt.io/qt-5/qquickitem.html#itemChange

So When quickItem activeFocus changes we get ItemChange event and after any check window->activeFocusItem() correctly return the newly focus QuickItem.

In short, we should do webview focus update based on ItemChange event.

see previous comments also for more on activeFocus behaviour inside focusout/in event.