We have resolved the on-call calendar issue affecting some teams.

We have synced the on-call schedules for all potentially affected teams and are continuing to monitor the situation closely. We are also personally reaching out to users who were affected by this issue.

Thank you for your patience as we worked through this issue.

We have identified the root cause of the on-call calendar issue affecting some teams.

We are working on a fix and monitoring the situation closely. We are also reviewing all affected schedules to understand the full scope of impact.

We will provide another update as soon as we have more information on it.

We are investigating an issue where the on-call calendar may display the incorrect person for some teams OR it may have the wrong person on-call.

Our initial analysis shows this occurs specifically in weekly schedules that do not have a handoff day configured, combined with custom slot configurations (e.g., weekday-only slots or uneven coverage across the week). In these cases, an internal inconsistency in how handoff boundaries are computed caused the scheduler to select the wrong user for the next rotation.

We are actively working on a fix and continuing to review all affected schedules. On-call alerting logic remains correct but this issue also puts the wrong person on-call in some cases.

We will post updates here as soon as we have more information.