If you go to "Browse by Hierarchy" page (opac-browser.pl) and you have not previously configured it, you get a message pointing you to the old Koha Wiki: "The browser table is empty. this feature is not fully set-up. See the Koha Wiki for more information on what it does and how to configure it." The link is easily corrected, but I don't think it is in our patrons' best interests to explain to them why a feature we have offered them doesn't work. They certainly don't need to be redirected to a developer's wiki. We either need a more patron-friendly error message or we need a way to hide the link when the feature hasn't been configured.
I just came across this for the first time and agree 100% - it needs to patron oriented, not librarian/administrator oriented.
Still valid on current master (3.19.00.005) I think the warning message should be re-worded in Opac and there should be a more technical error message in Staff client (About Koha: System Information).
This can be disabled by the OpacBrowser pref. To me it's not a bug: You should not put in production a non-configured opac.
The wiki link is pointing to the new wiki these days. So this is ok. I am rewording the title a bit - I like the idea of displaying information on the system information tab and possibly show a neutral message in the OPAC.