Web Socket breaks when upgrading to 1.95.0

[octionicsolutions]

Bug Description

When upgrading to version 1.95.0 the editor does not work properly anymore. It shows "lost connection". Thus it is not possible to execute workflows in test mode. The rest of the app seems to work fine though.

Log Output:

n8n-02-n8n       | 2025-05-26T15:01:14.599Z | debug | Skipped browserId check on /rest/push {"file":"auth.service.js","function":"resolveJwt"}
n8n-02-n8n       | 2025-05-26T15:01:14.601Z | warn | Origin header does NOT match the expected origin. (Origin: "https://n8n.mydomain.com", Expected: "wss://n8n.mydomain.com") {"scopes":["push"],"expectedOrigin":"wss://n8n.mydomain.com","headers":{"host":"n8n.mydomain.com","origin":"https://n8n.mydomain.com","x-forwarded-proto":"wss","x-forwarded-host":"n8n.mydomain.com"},"file":"index.js","function":"handleRequest"}

To Reproduce

• Update to version 1.94.0 to 1.95.0
• Open any workflow

Expected behavior

Editor working again without showing connection error in top right corner.

Operating System

Ubuntu Server 22.04 LTS

n8n Version

1.95.0

Node.js Version

n/A

Database

PostgreSQL

Execution mode

main (default)

[Joffcom]

Hey @octionicsolutions,

We have created an internal ticket to look into this which we will be tracking as "GHC-2175"

[netroy]

Can you please share what reverse-proxy you are using in this setup?

[octionicsolutions]

Using traefik. Worked with this docker compose config flawlessly in 1.94.0

labels:
- traefik.enable=true
- traefik.http.routers.${SERVICE_NAME}.rule=Host(${SERVICE_URL})
- traefik.http.routers.${SERVICE_NAME}.entrypoints=https
- traefik.http.routers.${SERVICE_NAME}.tls=true
- traefik.http.routers.${SERVICE_NAME}.tls.certresolver=letsencrypt
- traefik.http.services.${SERVICE_NAME}.loadbalancer.server.port=5678

[netroy]

I think the issue might be that we are checking only for https and not for wss in this code block.

[octionicsolutions]

Looks like it.
Would be great to have backwards compatibility here, so I do not need to implement a traefik middleware on all environments to hack around this issue.

[leobaldoneto]

Can I downgrade the version until it's fixed?

[octionicsolutions]

Can I downgrade the version until it's fixed?

It worked for me. But always comes with a risk I think.