TextArea focus is lost forever

When TextArea is a child of ApplicationWindow with flag set to Qt.Popup, it is not possible to set focus neither by mouse clicking not by calling forceActiveFocus().

I've attached a reproduction scenario for this. When the app is running click "Show another window" button and you'll get another window with TextArea component anchored to the center with focus lost forever. Nothing seems to help when trying to set focus and start typing there.

The same component is placed on the first window and it's ok to set focus to it.