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claude-code - ✅(Solved) Fix Auto-close duplicate workflow replaces existing issue labels [1 pull requests, 1 comments, 2 participants]

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anthropics/claude-code#60656•Fetched 2026-05-20 03:52:51
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The duplicate auto-close workflow currently closes an issue by PATCHing the issue with labels: ["duplicate"] together with state: "closed" and state_reason: "duplicate".

GitHub Update an issue API treats the labels field as a replacement for the issue label set, not an additive operation. As a result, when the workflow closes an issue as a duplicate, it can erase existing labels such as platform, area, priority, or lifecycle metadata.

Root Cause

The duplicate auto-close workflow currently closes an issue by PATCHing the issue with labels: ["duplicate"] together with state: "closed" and state_reason: "duplicate".

GitHub Update an issue API treats the labels field as a replacement for the issue label set, not an additive operation. As a result, when the workflow closes an issue as a duplicate, it can erase existing labels such as platform, area, priority, or lifecycle metadata.

Fix Action

Fix / Workaround

The duplicate auto-close workflow currently closes an issue by PATCHing the issue with labels: ["duplicate"] together with state: "closed" and state_reason: "duplicate".

Do not include labels in the issue PATCH used to close the issue. Close the issue first, then add the duplicate label via the additive labels endpoint (POST /repos/{owner}/{repo}/issues/{issue_number}/labels) so existing labels are preserved.

PR fix notes

PR #60659: Preserve labels when auto-closing duplicates

Description (problem / solution / changelog)

Fixes #60656

Summary

  • Close duplicate issues without replacing their labels
  • Add the duplicate label through the additive issue labels endpoint
  • Preserve existing platform, area, priority, and lifecycle labels when the workflow closes a duplicate

Validation

  • npm exec --yes --package typescript -- tsc --noEmit --target ES2022 --module ESNext --lib ES2022,DOM --skipLibCheck scripts/auto-close-duplicates.ts
  • git diff --check

Changed files

  • scripts/auto-close-duplicates.ts (modified, +9/-1)
RAW_BUFFERClick to expand / collapse

Summary

The duplicate auto-close workflow currently closes an issue by PATCHing the issue with labels: ["duplicate"] together with state: "closed" and state_reason: "duplicate".

GitHub Update an issue API treats the labels field as a replacement for the issue label set, not an additive operation. As a result, when the workflow closes an issue as a duplicate, it can erase existing labels such as platform, area, priority, or lifecycle metadata.

Impact

Duplicate issues can lose useful triage metadata at the same time they are closed. That metadata can still matter for routing, reporting, duplicate analysis, and future auditing.

Suggested fix

Do not include labels in the issue PATCH used to close the issue. Close the issue first, then add the duplicate label via the additive labels endpoint (POST /repos/{owner}/{repo}/issues/{issue_number}/labels) so existing labels are preserved.

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claude-code - ✅(Solved) Fix Auto-close duplicate workflow replaces existing issue labels [1 pull requests, 1 comments, 2 participants]