Remember to modify default.aspx after enabling “Wiki Page Home Page”

When enabling this feature you are modifying the default homepage of your site. The homepage will go from …/Default.aspx to …/SitePages/Home.aspx

When users have added bookmarks using the default.aspx homepage the users will still use your old homepage.

Quickfix edit the default.aspx file using SharePoint Designer and make a redirect to the new page. Or just add a Content editor and insert a script or descriptive text to update bookmarks