Introduction

On July 10, 2026, parts of the Phrase Strings frontend at app.phrase.com failed to load correctly for a short period, after required stylesheets and scripts failed to load — the underlying service itself stayed available. The issue began at 16:08 CEST and was resolved by 16:27 CEST. This post-mortem explains what happened and what we're doing to prevent a recurrence.

Timeline

• Jul 10, 2026 at 16:08 CEST – A deployment introduced new application assets that were never uploaded to our storage service, so the application could no longer load its stylesheets and scripts for customers.
• Jul 10, 2026 at 16:21 CEST – Issue detected, incident declared.
• Jul 10, 2026 at 16:24 CEST – Root cause identified.
• Jul 10, 2026 at 16:26 CEST – Fix applied.
• Jul 10, 2026 at 16:27 CEST – Customer-facing impact ended.
• Jul 10, 2026 at 16:32 CEST – Incident downgraded to monitoring while the underlying configuration was addressed.
• Jul 10, 2026 at 17:12 CEST – Configuration corrected, incident resolved.

Root Cause

During a planned, routine maintenance, a configuration change unintentionally disabled the process that uploads application assets (stylesheets, scripts) to our storage and content-delivery service. This went unnoticed at first, since the assets already in place kept working and no new versions had been shipped yet.

On July 10, 2026, a deployment shipped new versions of these assets. Because uploading was still disabled, the new files never reached the storage service, and the application could not load its stylesheets and scripts.

Actions to Prevent Recurrence

1. Asset synchronization re-enabled – The disabled process was fixed, restoring correct asset delivery.
2. Asset availability monitoring – Adding monitoring to detect asset load failures automatically, before customers are affected.