*Go to http://strategy.wikimedia.org/wiki/Special:AllPages
*Choose the Project namespace in the combo box ('Strategic Planning' entry).
*Press Go

Expected result:
Display pages starting at:
Display pages ending at:
Namespace: Strategic Planning

Actual result:
Display pages starting at: Strategic Planning:Strategic Planning:
Display pages ending at: Strategic Planning:Strategic Planning:
Namespace: (Main)

Version: 1.16.x
Severity: normal