# Critical UI Bug with Merge Node in n8n
## Description
Hello,
I'm experiencing a **critical user interface bug** with the **Merge node**. Although the node is configured in **"Combine" mode**, the input pins do not appear, making it impossible to connect workflows visually. I have confirmed that the node's version in my workflow is **n8n-nodes-base.merge** with **typeVersion: 3.2**.
## Attempts to Fix
I have already tried the following solutions **without success**:
- I have deleted and recreated the Merge node.
- I have restarted the n8n application and cleared my browser's cache.
- I have updated my n8n instance to the latest version available (**1.106.3**).
Even though connections can be created manually by editing the JSON file, the interface does not allow me to make them visually.
## Diagnostic Details
I am attaching the following detailed information for diagnosis:
### My instance information
- **n8n Version:** 1.106.3
- **Installation Method:** hosted-self (installed via npm on a server)
- **Server:** AWS EC2 instance (t3.small) running Ubuntu 24.04.
- **Access:** Via an Nginx reverse proxy.
- **Instance ID:** 4dd307f3117a4aa72e6a984829657ee28f01afcc2596a78e6f71aa93674e55e2
### Relevant environment variables
- `NODE_ENV=production`
- `N8N_LISTEN_ADDRESS=127.0.0.1`
- `WEBHOOK_URL=https://espacioinformativo.cloud`
- `DB_TYPE=sqlite`
### Attachments
- **Workflow JSON file:** Shows the correct Merge node configuration and the connections that should exist.
- **Screenshot of the bug:** Shows my Merge node without the visible connection pins.
- **Screenshot of a functional Merge node:** Shows how the node should appear correctly, with visible "Input 1" and "Input 2" pins.
I appreciate your prompt assistance in resolving this issue.
---
Debug info
core
n8nVersion: 1.106.3
platform: npm
nodeJsVersion: 22.18.0
database: sqlite
executionMode: regular
concurrency: -1
license: enterprise (production)
