GraphiteEditor/Graphite

Crash when hiding an 'Instance Position' or 'Pointer Position' node feeding a value

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#3629 opened on Jan 13, 2026

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CrashGood First Issue

Description

Set up this simple graph:

Select the 'Instance Position' node (or instead, wire it up to use the 'Pointer Position' node and select that) then hide it with Ctrl+H (Cmd+H on Mac). This results in a crash.

There are similar cases where this does not crash (these exhibit the behavior we'd expect from the above cases):

  • A 'Vec2 Value' node instead
  • An 'Instance Index' node feeding into the Rotation input of the Transform node

Contributor guide

Tech stack
rust
Domain
frontendtooling
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.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
RustNode graph basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45
Research direction
The crash occurs when hiding a specific type of node (Instance Position or Pointer Position) that is feeding a value. Investigate the code handling node visibility (hiding/unhiding) and the node evaluation pipeline. Look for differences between the crashing nodes and similar non crashing nodes like Vec2 Value or Instance Index. Check for potential null pointer dereferences or incorrect assumptions about node output types in the hiding logic.