Steps to reproduce
- Go to a non-mainspace page, e.g., en:User:Example
- Click the Talk link in the footer and choose a browser to handle the link
Actual results
App navigates to a "bad title" page because, assuming the title is a mainspace article, it simply prepends "Talk:" to the title
Expected results
Best case: App navigates to User_talk:Example
Also acceptable and better than the status quo: "talk" link does not appear for non-mainspace pages
From OTRS report: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom;TicketID=9994845