Not unique table/alias when using multiple tag groups

[kurumpa]

You can't use taggedWith() to find records with tags from several groups.

For example when using 'categories' and 'os' tags from http://www.yiiframework.com/extension/taggable/#hh15 it is impossible to get models like $soft = Software::model()->byCategory('audio')->byOs('windows')->findAll() ( 'byCategory' and 'byOs' are corresponding named scopes that use taggedWith() ), the error is "Not unique table/alias: 'bt0'"