vue+element中el-radio单选框回显后点击不能被选中

Question

<el-form-item label="货权转移费用收取" prop="feePayer" class="is-required">
          <el-radio-group v-model="acceptData.feePayer" @change="changeRadio">
            <el-radio v-model="acceptData.feePayer" label="OUT">出让方</el-radio>
            <el-radio v-model="acceptData.feePayer" label="IN">受让方</el-radio>
          </el-radio-group>
</el-form-item>

数据能回显，但是点击一次后，就不能再选中按钮