[Bug Reproduce] Wot-Design-Uni wd-textarea placeholder can't be empty

main.vue

<script lang="ts">
export default {
    name: 'plainMessageEditor',

    props: {
    },

    data() {
        return {
            data: ""
        }
    },
}
</script>

<template>

    <wd-textarea id="content-editor"
        v-model="data"
        :placeholder="''"
    />

</template>