🤔 [QUESTION] 分组柱线图表 缩略轴

### 🐛 Question description [Please make everyone to understand it]

### 💻 Link to minimal reproduction

Please provide a link by forking these links [g2plot](https://codesandbox.io/s/g2plot-reproduction-template-gyej1) or GitHub repo. What is a minimal reproduction, and why is it required?

### 🏞 Expected result

### 🚑 Any additional [like screenshots]

* **G2Plot Version**:
* **Platform**:
* 分组柱线图表 缩略轴的区间值是2019-05到2019-07，为什么初始化后图表是从首开始渲染呢(如图1)，当稍微拖动缩略轴之后是预期的图表，但是前面的值会跑到后面，是需要添加什么参数约束吗，还是插件的bug呢

Start with the G2Plot reproduction template linked in the issue and reproduce the grouped bar-line chart with a thumbnail axis covering 2019-05 to 2019-07. The issue does not provide a completed reproduction, version, platform, or entry point, so first isolate the configuration that causes the initial range and ordering to differ from the result after dragging. Done means the initial render shows the requested range and preserves the expected value order, or the required parameter is identified.

Written by the indexing model from the issue text.