https://bugs.winehq.org/show_bug.cgi?id=41269
--- Comment #4 from Hans Leidekker hans@meelstraat.net --- Looks like there are two issues here: the upgrade code is not removed and the product key is not deleted. If I uninstall the wine-mono package its upgrade code is still there but its product key is properly deleted.
Can you point to an installer that shows the second problem?