UI on n8n Cloud not working

Questions
1

Update: this seems to have been resolved, in the meantime. No change on our end. Original post below.

Hi All! We’re having issues with our Cloud instance of n8n, and we’re wondering whether it is specific to us, or whether this is more widespread.

Specifically, the UI looks “mangled” due to a few resources failing to load. A screenshot of what the personal Workflows overview looks right now:

CleanShot 2025-12-09 at 15.46.50
CleanShot 2025-12-09 at 15.46.502024×1161 108 KB

When using the browser’s DevTools Network tab, we find that a specific resource seems to have problems:

https://o1420875.ingest.us.sentry.io/api/4503960699273216/envelope/?sentry_version=7&sentry_key=abcabc… → 403 Forbidden error, no response body.

Which may or may not be what’s causing the strange layout, reminiscent of some missing CSS resources.

Additional info:

  • We’ve restarted the workspace from the Admin Panel, no change.
  • The same behavior has been noticed for various users, using different browsers and machines.
  • Version: 1.121.3

Any help is appreciated!

2

Since the issue seems to have resolved itself, it was likely a temporary glitch with resource loading on the n8n Cloud platform. If this happens again, try clearing your browser cache or using incognito mode to see if it persists. For future reference, keep an eye on the browser console (F12 > Console) for any specific errors that might help diagnose UI issues.