【报Bug】picker mode="date" 限定范围日期滚动日期错乱

示例代码：

<template>  
    <view class="content">  
        <view class="uni-title uni-common-pl">日期选择器</view>  
        <view class="uni-list">  
            <view class="uni-list-cell">  
                <view class="uni-list-cell-db">  
                    <picker mode="date" :value="date" :start="startDate" :end="endDate" @change="bindDateChange">  
                        <view class="uni-input">{{date}}</view>  
                    </picker>  
                </view>  
            </view>  
        </view>  
    </view>  
</template>  

<script>  
    export default {  
        data() {  
            const currentDate = this.getDate(0)  
            return {  
                title: 'Hello',  
                date: currentDate,  
            }  
        },  
        computed: {  
            startDate() {  
                console.log(this.getDate(-7))  
                return this.getDate(-7);  
            },  
            endDate() {  
                console.log(this.getDate(0))  
                return this.getDate(0);  
            }  
        },  
        methods: {  
            getDate(day) {  
                let today = new Date();  
                let targetday_milliseconds = today.getTime() + 1000 * 60 * 60 * 24 * day;  
                today.setTime(targetday_milliseconds);  
                let tYear = today.getFullYear();  
                let tMonth = today.getMonth();  
                let tDate = today.getDate();  
                tMonth = this.doHandleMonth(tMonth + 1);  
                tDate = this.doHandleMonth(tDate);  
                return tYear + "-" + tMonth + "-" + tDate;  
            },  
            doHandleMonth(month) {  
                let m = month;  
                if (month.toString().length == 1) {  
                    m = "0" + month;  
                }  
                return m;  
            },  
            /**  
             * 选择日期  
             */  
            bindDateChange: function(e) {  
                console.log("选择", e.target.value);  
                this.date = e.target.value  
            },  
        }  
    }  
</script>  

<style>  
    .content {  
        display: flex;  
        flex-direction: column;  
        align-items: center;  
        justify-content: center;  
    }  

    .logo {  
        height: 200rpx;  
        width: 200rpx;  
        margin-top: 200rpx;  
        margin-left: auto;  
        margin-right: auto;  
        margin-bottom: 50rpx;  
    }  

    .text-area {  
        display: flex;  
        justify-content: center;  
    }  

    .title {  
        font-size: 36rpx;  
        color: #8f8f94;  
    }  
</style>  

操作步骤：

日期选择范围2020-12-30到2021-01-06 100%复现

预期结果：

可正常滚动 选择范围内的日期

实际结果：

滑动到2021年1月4号-1号范围 -- 会自动跳转到2020年12月30日