RuntimeError: memory access out of bounds in yoga-layout WASM during "Loading sessions"

Crash Report

Error

✖ CRITICAL: Uncaught Exception!
✖ ERROR → RuntimeError
ℹ REASON → memory access out of bounds

Stack Trace

RuntimeError: memory access out of bounds
    at wasm://wasm/000460e2:wasm-function[215]:0xd5ef
    at wasm://wasm/000460e2:wasm-function[185]:0xcf8c
    at X.getComputedWidth (yoga-wasm-base64-esm.js:33:52)
    at renderer (renderer.js:32:49)
    at onRender (ink.js:348:56)
    at debounce (debounce.mjs:12:17)
    at invoke (debounce.mjs:45:9)
    at onTimerEnd (debounce.mjs:51:17)
    at Timeout._onTimeout (debounce.mjs:59:4)

Environment

• Command Code version: 1.53.0
• Node.js: v26.1.0 (via nvm)
• yoga-layout: 3.2.1
• ink: 7.1.0
• OS: Linux

Reproduction

This crash occurs during "Loading sessions…" — it happens intermittently when the app starts up and loads saved sessions.

Trace ID

3a1270ebb1c389e7db6257397a21f5e0

Analysis

The crash happens in renderer.js:32 when node.yogaNode.getComputedWidth() is called on a yoga node whose WASM memory has already been freed. This appears to be a race condition between:

1. React's reconciler destroying nodes (calling freeRecursive() via cleanupYogaNode in removeChild/removeChildFromContainer)
2. The debounced render callback still trying to traverse the node tree and compute layout on the now-deallocated WASM node

This is triggered when rapid state changes occur (e.g., mounting/unmounting components during "Loading sessions"), causing a yoga node to be freed in one tick while the throttled renderer still holds a reference.

Suggested Fix

Add a guard in renderer.js to check whether yogaNode is still valid before calling getComputedWidth(), or wrap the WASM call in a try-catch to handle freed nodes gracefully.

「Loading sessions…」の表示中に起動時に断続的に発生するクラッシュを再現します。renderer.js:32 と、removeChild および removeChildFromContainer 内の cleanupYogaNode の経路を読み、その後、デバウンスされたレンダーコールバックがどのようにノードを保持するかを追跡します。レイアウトの読み取り時に、セッションの読み込みによって WASM のメモリアクセス・クラッシュが発生しなくなれば完了です。