[Stormyfacts] when using '@' as supybot's prefix and no alternative char, factoids only works for unregistered users

[m4v]

14:53 mkv @ping
14:53 scratDev another contentless ping... sigh...
14:53 m4v wha
14:53 m4v @ping
14:53 scratDev pong
14:53 m4v @ubuntu
14:53 scratDev Error: "ubuntu" is not a valid command.
14:53 mkv @ubuntu
14:53 scratDev Ubuntu is a complete Linux-based operating system, freely available with
      both community and professional support. It is developed by a large community and we
      invite you to participate too! - Also see http://www.ubuntu.com
14:53 m4v so it works for unregistered users, what the hell.
14:54 m4v @config supybot.reply.whenAddressedBy.chars
14:54 scratDev Global: @; #ubuntu-bots-test: @
14:54 m4v @config supybot.reply.whenAddressedBy.chars $
14:54 scratDev The operation succeeded.
14:54 m4v $ping
14:54 scratDev another contentless ping... sigh...

[m4v (m4v)]

this is apparently a conflict with the option "plugins.stormyfacts.reply.commandprefix" if is set to @