https://bugs.winehq.org/show_bug.cgi?id=42297
--- Comment #1 from Bruno Jesus 00cpxxx@gmail.com --- After downloading the package once correctly wine will no longer prompt, it will always automatically install while the prefix is being created.
To double check if the package is installed or not you can use "wine uninstaller". In a clean prefix uninstaller should show only Wine Mono and Wine Gecko with their respective versions.