Last modified: 2011-05-24 22:51:07 UTC
When selecting the Boolean property type from Special:CreateProperty, the user should not see the "list 'allowed values' field": "If you want this property to only be allowed to have certain values, enter the list of allowed values, separated by commas (if a value contains a comma, replace it with "\,"):" Providing a list of allowed values is at odds with the idea of a boolean type, however ([1]): "You can enter "true" or "false", also 1/0, yes/no, t/f, and y/n. Other languages may provide language-specific options." [1] http://semantic-mediawiki.org/wiki/Help:Type_Boolean
This is already fixed in SVN - marking as "invalid".
I'd call this fixed rather than invalid.