I’m running n8n on Railway using the N8N (w/ webhook processors) template. Everything is deployed properly and running.

The Issue

• Active mode → Telegram Trigger works fine. Bot messages reach n8n and trigger executions.

• Test Execution mode → Workflow just stays in “Listening…” and never receives Telegram messages.

In the UI I see:

Test URL points to the Primary (custom domain):

• https://<custom-domain>/webhook-test/<workflowId>/webhook

Production URL points to the Webhook Processor (Railway domain):

• https://<processor-subdomain>.up.railway.app/webhook/<workflowId>/webhook

This mismatch means Active works (through processor) but Test never fires (because it’s pointed at Primary).

What I’ve Tried

• Added these env vars to both Primary and Webhook Processor:

  • N8N_WEBHOOK_URL=https://<custom-domain>

  • N8N_WEBHOOK_TUNNEL_URL=https://<custom-domain>

• Cleared Telegram webhook with deleteWebhook and re-registered.

• Verified with getWebhookInfo: in Active mode it shows the /webhook/... URL. In Test mode, even though /webhook-test/... appears in n8n, Telegram never sends messages there.

• Hitting the test URL directly in a browser returns:

  • {"code":404,"message":"This webhook is not registered for GET requests. Did you mean to make a POST request?"}

How can I fix this issue?