Some reassignment events are missing from the new issue activity timeline.

Context

• Region: LATAM
• Environment: admin portal
• Reporting team: Sales
• Observed release: v1.13.2
• Impact level: low

Reported Behavior

• Some reassignment events are missing from the new issue activity timeline.
• Scope: enterprise onboarding
• Root cause hint: recent auth flow changes

Reproduction Steps

1. Assign an issue to a user.
2. Reassign it to another user.
3. Open the timeline and compare events.

Expected Result

• Each assignee change should appear as a timeline event.

Investigation Notes

• Review the OAuth callback and session persistence flow.
• Usually affects issues changed very quickly in succession.
• May be a stale cache issue.

Impact

• Managers cannot verify who owned a ticket at a given point in time.
• This issue affects LATAM customers and is prioritized as low.