Repro:
- Go to https://en.m.wikipedia.org/wiki/Wikipedia:Sandbox
- Click the pencil button
- Do some random edit
- "Continue" -> "Save"
- "Project:Sandbox" is now shown in page title <title> and heading <h1>, instead of "Wikipedia:Sandbox".
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=60251