fix(core): Workflow diff preview errors out in push dialog for workflow that's newly created

[konstantintieber]

Summary

Fixes the error that's currently happening when trying to view the diff of a workflow that is newly created and to be pushed.

How to reproduce (before fix):

• On an instance that's connected to a git repo
• Create a new workflow
• Save it
• Click "Push" in the sidebar
• Click on "Compare versions" on the newly created workflow

Before

When clicking "Compare versions":

After

When clicking "Compare versions":

Related Linear tickets, Github issues, and Community forum posts

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

[cubic-dev-ai]

No issues found across 8 files

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
15384	1	15383	0

View the top 1 failed test(s) by shortest run time

GET /workflow-history/:workflowId should include workflowPublishHistory records related to each history item

Stack Traces | 0.016s run time

Error: expect(received).toHaveLength(expected)

Expected length: 1
Received length: 2
Received array:  [{"createdAt": "2025-12-05T22:22:03.512Z", "event": "activated", "id": 1, "userId": null, "versionId": "3b48aa21-6671-48e0-89b9-3f2a1f0c052a", "workflowId": "ybl1Ftegzp2vpif2"}, {"createdAt": "2025-12-05T22:22:03.513Z", "event": "deactivated", "id": 2, "userId": null, "versionId": "3b48aa21-6671-48e0-89b9-3f2a1f0c052a", "workflowId": "ybl1Ftegzp2vpif2"}]
    at Object.<anonymous> (.../test/integration/workflow-history.api.test.ts:163:52)
    at processTicksAndRejections (node:internal/process/task_queues:105:5)

To view more test analytics, go to the Test Analytics Dashboard
_{📋 Got 3 mins? Take this short survey to help us improve Test Analytics.}

[bundlemon]

BundleMon

Unchanged files (2)

Status	Path	Size	Limits
✅	WASM Dependencies tree-sitter-bash.wasm	181.26KB	-
✅	WASM Dependencies tree-sitter.wasm	74.47KB	-

No change in files bundle size

Groups updated (2)

Status	Path	Size	Limits
✅	**/*.js	11.43MB (+146.74KB +1.27%)	-
✅	**/*.css	233.39KB (+12.62KB +5.72%)	-

Final result: ✅

View report in BundleMon website ➡️

---

Current branch size history | Target branch size history

[blacksmith-sh]

Found 1 test failure on Blacksmith runners:

Failure

Test	View Logs
GET /workflow-history/:workflowId/GET /workflow-history/ :workflowId should include workflowPublishHistory records related to each history item	View Logs

[currents-bot]

✅

E2E Tests: n8n tests passed after 10m 56.2s

🟢 573 · 🔴 0 · ⚪️ 43 · 🟣 2

View Run Details

Run Details

• Project: n8n

• Groups: 2

• Framework: Playwright

• Run Status: Passed

• Commit: 952e4b0

• Spec files: 129

• Overall tests: 616

• Duration: 10m 56.2s

• Parallelization: 9

Groups

GroupId	Results	Spec Files Progress
multi-main:ui:isolated	🟢 54 · 🔴 0 · ⚪️ 0	9 / 9
multi-main:ui	🟢 519 · 🔴 0 · ⚪️ 43 · 🟣 2	120 / 120

---

This message was posted automatically by currents.dev | Integration Settings