On the "Name" step of MediaWiki installer, there are a couple of checkboxes:
- Subscribe to the release announcements mailing list.
- Share data about this installation with MediaWiki developers.
The first one remembers its state, but the second does not. If you uncheck it, and submit the form with some value which fails (no site name, insecure password, etc.), «Share data about this installation with MediaWiki developers.» goes back to its default (checked) state.
Expected: it should keep the previous state.