vue表单v-validate再次输入密码confirmed校验不通过问题

按官方文档，只要写成：

<div>
	<mt-field label="密码" placeholder="请输入密码" v-validate="'required'" data-vv-name="password" 
	:class="{'is-danger': errors.has('password') }" :type="passwordType" :attr="{maxlength:20}" 
	v-model="user.password">
	</mt-field>
	<div v-show="errors.has('password')">
		<p>{{ errors.first('password') }}</p>
	</div>
</div>
<div>
	<mt-field label="确认密码" placeholder="请再次输入密码" v-validate="'required|confirmed:password'" data-vv-name="repassword" 
	:class="{'is-danger' :errors.has('repassword') }" :type="passwordType" :attr="{maxlength:20}" 
	v-model="user.repassword">
	</mt-field>
	<div v-show="errors.has('repassword')">
		<p>{{ errors.first('repassword') }}</p>
	</div>
</div><div>
	<mt-field label="密码" place