| Incident Window | 20 May 2025 (17:00 CEST release) – 26 May 2025 (14:00 CEST hot‑fix) |
|---|---|
| Severity | Critical (patients blocked from sending actions containing Patient Information) |
| Platforms Affected | Android only (v5.61.0). iOS unaffected. |
Android version 5.61.0 introduced a problem causing an immediate app crash whenever a patient submitted an action that included patient information fields. The defect was first reported to support on 22 May and confirmed as a widespread production issue on 26 May. A hot‑fix (v5.61.1) was released within four hours of confirmation. No alerts were missed and no clinical risk materialised, but 167 patients (0.26 % of the active Android user base) experienced this issue up to six days.
| Metric | Value |
|---|---|
| Unique patients affected | 167 (0.26 % of active Android patients) |
| Duration of impact | 6 days (20–26 May 2025) |
| Organisations affected | All (global rollout) |
| Clinical alerts missed | 0 |
| SLA breach | None – MTTR 4 h, inside 24 h SLA |
Clinical Severity: No direct patient harm. Crashes occurred before data left the device, therefore no medical alerts were generated or lost.
SLA Clarity: We calculate from the moment that we have confirmed the Production Issue.
| Date & Time (UTC) | Event |
|---|---|
| 20 May 17:00 | v5.61.0 released to production (rollout starts at 0% and within 7-8 days reaches 100%) |
| 22 May 09:12 | First support ticket received (insufficient detail) |
| 22–25 May | Isolated crash reports |
| 26 May 09:30 | Second support ticket with reproduction steps |
| 26 May 10:00 | 2nd Line Support and Testers reproduces issue |
| 26 May 10:30 | Root cause identified; workaround not feasible. |
| 26 May 10:41 | InStatus Incident published. |
| 26 May 11:16 | Fix is created, tested for Quality Assurance |
| 26 May 14:42 | Hotfix is approved by Google and released directly for all users on version 5.61.0. |
Update of Android SDK made it required to make some types explicit which was previously not required.
Code fix – Changed list generic from Any to Serializable.
Hot‑fix release – v5.61.1, fully rolled out in < 4 hours after Production Issue confirmed.
External
Status Page incident opened 26 May 08:00, updated hourly until resolved.
Support responded to all related tickets with ETA and resolution confirmation.
Internal
Summary posted in #luscii-general after resolution.
| Area | Action |
|---|---|
| Testing | Expand regression suite with ↳ patient‑info submission on Android & iOS. |
| Architecture | Accelerate migration to Jetpack Compose to eliminate legacy Parcelable patterns (part of Major Maintenance roadmap) |
| Monitoring | Lower crash‑rate threshold for Slack alerts |
| Process | Review crash reports within 1 week of release as default checklist item |