QGuiApplicationPrivate::updateBlockedStatus getting called on non-toplevel widgets with underlying native windows

In the attached application, a modal dialog is displayed while new widgets are added to the application's main window. After hiding the modal dialog, the main window does not respond to mouse clicks in any of its widgets (including the menubar).

QGuiApplicationPrivate::updateBlockedStatus() is setting window->d_func()->blockedByModalWindow = true on all the child widgets, not just the toplevel window. This flag does not get set to false after hiding the modal dialog (except on the toplevel window).