In the diff view, if you expand an "unmodified lines" section, when you selec...

In the diff view, if you expand an "unmodified lines" section, when you select a range of lines for review, that range can't straddle the original "unmodified lines" boundary that no longer exists.

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| Field | Value |
| --- | --- |
| App version | 1.0.26 |
| OS | Windows 10.0.22631 |
| Theme | Fox |
| Path | /chat |
| Tenure | Week 3 |

首先在报告的 Windows 设置上复现 diff 视图中的选择行为：展开一个“未修改行”部分，然后选择一个跨越其原有边界的范围。跟踪 diff 视图中的选择处理，并添加 coverage，证明展开后的范围可以跨越该边界进行选择；当该范围被接受以供审查时即表示完成。

由索引模型根据 Issue 内容生成。