Cannot edit protected pages with Bot in LockDown wiki
Fragment of a discussion from Extension talk:Lockdown
The problem I comment is with hook SearchableNamespaces, once only this is disabled, bot is loaded with proper permissions. I suspect it must be MediaWiki bug therefore. I filled a bug. Unless you host private content, you can comment line: $wgHooks['SearchableNamespaces'][] = 'lockdownSearchableNamespaces'; to bring robots back to work.