At least in Firefox 24 on Linux (not tested in other systems) VisualEditor does not load on main namespace pages whose titles begin with a full stop (period). The URL changes and the page reloads but remains in view mode.
Tested at [[.mp]], [[.uk]], [[.300]] and [[.300 Remington American Magnum]] at en.wp and at the .uk articles at it.wp, de.wp, fr.wp and es.wp
The bug does not manifest in other namespaces, e.g. [[User:Thryduulf/.100]] and [[User:.anaconda]] load correctly.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=55494