n8n - 💡(How to fix) Fix Workflow layouts broken now when using Codex with MCP

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Error Message

  • error: all
RAW_BUFFERClick to expand / collapse

Bug Description

The design updates have been working great with Codex. Starting yesterday, each update breaks the layout.

From:

<img width="1495" height="606" alt="Image" src="https://github.com/user-attachments/assets/47cc0d3a-2a0a-4a4e-a3f2-df32d82812cc" />

to:

<img width="1429" height="802" alt="Image" src="https://github.com/user-attachments/assets/283831c7-9672-404e-a442-60ac5c689940" />

To Reproduce

Codex update to workflow using MCP.

Expected behavior

Preserve layouts.

Debug Info

Debug info

core

  • n8nVersion: 2.19.5
  • platform: docker (cloud)
  • nodeJsVersion: 24.14.1
  • nodeEnv: production
  • database: sqlite
  • executionMode: regular
  • concurrency: 20
  • license: enterprise (sandbox)
  • consumerId: 00000000-0000-0000-0000-000000000000

storage

  • success: all
  • error: all
  • progress: false
  • manual: true
  • binaryMode: filesystem

pruning

  • enabled: true
  • maxAge: 720 hours
  • maxCount: 25000 executions

client

  • userAgent: mozilla/5.0 (macintosh; intel mac os x 10_15_7) applewebkit/537.36 (khtml, like gecko) chrome/147.0.0.0 safari/537.36
  • isTouchDevice: false

Generated at: 2026-05-08T23:21:40.209Z

Operating System

Mac OS

n8n Version

2.19.5

Node.js Version

24.14.1

Database

SQLite (default)

Execution mode

main (default)

Hosting

n8n cloud

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FAQ

Expected behavior

Preserve layouts.

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n8n - 💡(How to fix) Fix Workflow layouts broken now when using Codex with MCP