GraphiteEditor/Graphite

Pen tool preview line disappearing during repeated undo

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#3,790 创建于 2026年2月20日

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 (0 评论) (0 反应) (1 负责人)Rust (25,662 star) (1,176 fork)batch import
Good First Issue

描述

When using the Pen tool to draw a path and pressing Ctrl+Z multiple times, the preview line (showing the segment from the last anchor to the cursor) would disappear after a certain number of undos.

Current behaviour:

https://github.com/user-attachments/assets/bac854dd-4e7e-438d-ae3f-c6fbd0133275

Expected behaviour:

https://github.com/user-attachments/assets/b0892632-a3ac-43be-ae33-d84d5ebcdf48

贡献者指南

技术栈
rust
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
blocked
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Rust programming basics
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
60
研究方向
Investigate the undo/redo system in Graphite's source code to understand how it affects the Pen tool's preview line. Look at the history management module (likely in a file such as `history.rs`) and the Pen tool's state handling during undo operations. Check the issue for any linked PRs or comments for additional context, though none exist currently. Reproduce the bug locally to identify the specific undo step causing the preview to disappear.