GraphiteEditor/Graphite

Pen tool preview line disappearing during repeated undo

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#3,790 opened on Feb 20, 2026

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Description

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

Contributor guide

Research direction
Investigate the undo stack management for the Pen tool. Find where the preview line is stored and ensure it is correctly saved and restored during undo operations.
Tech stack
rust
Domain
desktopfrontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
55