邮箱格式验证时其他字段也被验证了？ [ 2.0 版本 ]

`写好场景和规则如下

public function scenarios()

{
     $scenarios = parent::scenarios();
     $scenarios['login'] = ['emails','password'];
     $scenarios['register'] = ['name','emails','password'];
     $scenarios['forget'] = ['emails'];
     return $scenarios;
}

public function rules()
{
    return [
        [['name','password','emails'],'required','message'=>'选项不能为空！请重新输入！'],
        ['emails','email','message'=>'请输入正确的邮箱格式'],
        [['emails','password'],'checkLogin','on'=>'login'],
        ['emails','unique','message'=>'该邮箱已被注册使用！请重新填写','on'=>'register'],
        ['password','checkRegister','on'=>'register'],
        ['emails','checkEmail','on'=>'forget'],
    ];
}

注册页面 进行含有name emails 和 password的数据提交  发现name和emails都被验证了一遍email规则，好奇这是什么原因