Desktop app OOM crash with 8 parallel agents (Windows 11, v1.18.32) #51529

Description

OpenCode Desktop crashes with Out-of-Memory (OOM) after running 8 parallel agents in separate processes. The renderer process is killed by the OS, causing the entire app to become unresponsive and crash.

Plugins

• mscodebase_gate (local plugin, .opencode/plugin/mscodebase_gate.ts)

OpenCode version

1.18.32

Steps to reproduce

1. Open OpenCode Desktop on Windows 11
2. Launch 8 parallel agents in separate processes (each working on different tasks)
3. Wait approximately 25 minutes
4. App becomes unresponsive and crashes with OOM

Screenshot and/or share link

Debug bundle: opencode-debug-20260926T180023 (available upon request)

Operating System

Windows 11 (win32 x64)

Terminal

Windows Terminal (PowerShell)

Crash Evidence

window.log:

[2026-09-26 21:00:17.733] [error] (window) app render process gone {
  url: 'oc://renderer/index.html',
  details: { reason: 'oom', exitCode: -536870904 }
}

renderer.log (key errors):

• Thousands of ResizeObserver loop completed with undelivered notifications errors
• Failed to update terminal Error: PTY session not found: pty_0de7a0dc9001cRgCl9QF2xOtjF
• [ghostty-vt] warning(stream): unimplemented mode: 9001

Environment Details

• Electron: 42.3.3
• Chrome: 148.0.7778.218
• Node: 24.15.0
• Uptime before crash: ~1520 seconds (~25 minutes)
• Multiple workspaces open: 7+ projects

Related Issues

• Possible Bug: Renderer OOM crash loop after updating to v1.17.18 #36218: Similar Windows Desktop renderer OOM crash
• Electron renderer unresponsive / crash due to ResizeObserver loop storm (layout thrashing) #38296: Similar ResizeObserver loop storm
• [Bug]: Desktop renderer crashes from ResizeObserver feedback loop on rapid chat-list updates #33712: Desktop renderer crash with ResizeObserver feedback loop