【报Bug】打包后 onKeyboardHeightChange 监听事件无效

示例代码：

<template>  
    <view class="w-detail">  
<!--        <uni-nav-bar status-bar="true" fixed="true" shadow="false">  

        </uni-nav-bar> -->  
        <view class="w-detail-video">  
            <video src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4" controls></video>  
        </view>  
        <view class="w-detail-title">{{article.title}}</view>  
        <view class="w-row w-justify-content-between w-detail-info">  
            <text>作者{{height}}：{{article.author}}</text>  
            <text>发布时间：{{article.time}}</text>  
        </view>  
        <view class="w-detail-content">  
            {{article.content}}  
        </view>  

        <view class="w-comment-list">  
            <w-comment v-for="i in 3" :key="i"/>  
        </view>  
        <view style="height: 140rpx"></view>      
        <view class="w-detail-footer w-row">  
            <text class="iconfont w-btn-back" @click="back">&#xe626;</text>  
            <view class="w-comment-textarea">  
                <textarea value="" placeholder="发表评论" placeholder-class="w-comment-placeholder iconfont" v-model="comment"/>  
            </view>  
            <text class="iconfont w-btn-publish" :style="{color:comment.length>0?'#13c500':'#333'}">&#xe63c;</text>  
        </view>  
    </view>  
</template>  

<script>  
    import wComment from './components/wComment.vue';  
    import {  
        uniNavBar  
    } from '@dcloudio/uni-ui'  
    export default {  
        data() {  
            return {  
                article: {  
                    title: '出暖和看全家春节黄金六线横空出世纵横市场助力百万投资者获利',  
                    content: '侃股票-中国股民网络家园,聊大盘趋势侃行业概念热点,技术探讨与成果分享,搜集重大财经新闻、财经分析,分析涨停板股票的前世今生,资金流入前10名股票分析,建立完善股票池,通过热门股走势把握大盘趋。',  
                    author: '招财猫',  
                    time: '2021.06.12'  
                },  
                comment: '',  
                height: 0,  
            }  
        },  
        created() {  
            uni.onWindowResize((res) => {  
                console.log('变化后的窗口宽度=' + res.size.windowWidth)  
                console.log('变化后的窗口高度=' + res.size.windowHeight)  
            });  
            uni.onKeyboardHeightChange(res => {  
                console.log(res.height)  
              this.height = res.height;  
            })  
        },  
        components: {  
            wComment,  
            uniNavBar,  
        },  
        methods: {  
            back() {  
                uni.navigateBack()  
            }  
        }  
    }  
</script>  

<style lang='scss'scoped>  
.w-detail {  
    .w-detail-video {  
        >video {  
            width: 750rpx;  
            height: 420rpx;  
        }  
    }  
    .w-detail-title {  
        padding: 0 40rpx;  
        font-size: 30rpx;  
        font-weight: 700;  
        line-height: 48rpx;  
        color: #333;  
        text-align: center;  
    }  
    .w-detail-info {  
        padding: 0 40rpx;  
        color: #777;  
        font-size: 24rpx;  
        line-height: 68rpx;  
        border-bottom: 1px solid #eee;  

    }  
    .w-detail-content {  
        padding: 20rpx 40rpx;  
        font-size: 24rpx;  
        line-height: 48rpx;  
        color: #333;  
        border-bottom: 1px solid #eee;  
    }  
    .w-detail-footer {  
        position: fixed;  
        bottom: 0;  
        left: 0;  
        box-sizing: border-box;  
        width: 100%;  
        height: 120rpx;  
        line-height: 120rpx;  
        background: #eee;  
        box-shadow: 0 -2rpx 8rpx #404040;  
        .w-comment-textarea {  
            height: 80rpx;  
            flex: 1 1;  
            align-self: center;  
            background: #f4f4f4;  
            border-radius: 40rpx;  
            >textarea {  
                box-sizing: border-box;  
                height: 100%;  
                width: 100%;  
                padding: 0 30rpx;  
                font-size: 24rpx;  
                line-height: 80rpx;  
            }  
            .w-comment-placeholder {  
                color: #777;  
                font-size: 24rpx;  
                &::before {  
                    content: "\e645";  
                    margin-right: 6rpx;  
                }  
            }  
        }  
        .iconfont {  
            flex: 0 0 auto;  
            font-size: 80rpx;  
        }  
        .w-btn-back {  
            padding: 0 40rpx;  
            color: #333;  
        }  
        .w-btn-publish {  
            padding: 0 40rpx;  
            color: #13c500;  
        }  

    }  
}  
</style>  

操作步骤：

弹出键盘

预期结果：

输入框会在键盘上面

实际结果：

usb 调试时 可以 打包后不行