Incorrect mouse cursor when enabling QWidget while being on a native window

When a qwidget that has cursor set; and it is enabled while the mouse is on a native widget, the mouse cursor immediately changes to the cursor set for the qwidget, eventhough the cursor is not on top of the it.

Attached is a simple repo for the issue. 

I have set the cursor to Qt::SizeHorCursor for the QLabel on the right. The QPushButton on the left is set as NativeWindow. The application is set with Qt::AA_DontCreateNativeWidgetSiblings

To repro the issue in the test app:

1) Click on the button, the cursor will immediately change to SizeHorCursor