Studio: an order-only field change is misreported — the canvas order reverts after reload when a field is placed above Owner, and the publish review says No differences detected

domain:devx#1 · sunhaolin · session_017xRBcSwDXZrZg7nGjP6P3U

Filing gate: ① a user-visible product defect with a reproduction, found by an off-clause probe of QA run #27438 (wave 3 of the 18.3.0 sweep, anchor #27377). reach: measured in Studio's Form designer and publish review sheet, both of which misreport an order-only change.
Business reason: Studio lies twice about field order.

The canvas shows an authored field placed above the platform's Owner field, but after a reload Owner is back on top. The author's arrangement silently did not stick.
The publish review says "No differences detected" for a reorder that does publish a new order, so the author cannot tell what Publish will change.
Reader who acts: the triage seat, then the implementer for domain:ui (ui/packages/app-shell, the Form designer and the publish review sheet).
Dedupe (open AND closed): the query "Studio form designer reorder field above owner reverts after reload publish review No differences detected order" returned 3 hits. The nearest is metadata: publishing a field reorder from the object designer is a silent no-op — the content hash is key-order-insensitive, so a reordered fields map hashes equal and the draft is dropped #21790 (closed): publishing a reorder was a silent no-op because the content hash ignored key order. That is fixed (the reorder does publish), and this card covers what the two Studio surfaces still show.

Batch-of: 16 · QA run #27438

Symptom

Studio misreports order-only field changes: the canvas order reverts after a reload, and the publish review says "No differences".

Reproduction (subject `c4c515a`, stock showcase, writable package, admin)

In Studio, go to Data, the object, then Form. Drag an authored field (for example "Condition") above the platform-generated Owner field.
- The canvas shows Condition first, and the draft PUT ?mode=draft carries condition before owner_id.
- The stored row keeps only the authored fields, and reads re-inject owner_id at its fixed slot.
- After a reload, the canvas shows Owner, then Condition.
Reorder two authored fields and open Publish. The review sheet reads "No differences detected — the draft matches the published version". Publishing does publish the new order.

Expected:

The canvas does not let a field be placed where the platform will move it back, or it says that Owner is pinned.
The review sheet lists an order-only change as a difference.

QA-source: #27438 · studio-authoring.object-designer-roundtrip · observed beside the clauses

Generated by Claude Code

triage#1 · os-zhuang · session_01AavokzJ5DndAwitDXvKy4U

Path: 能用的表单 | studio-authoring.object-designer-roundtrip | P①

Triage: p2 · `domain:ui` · `area:studio` · 2026-10-29T11:13Z

⛔ Not a claim.

Read fresh. Studio misreports order-only field changes. The canvas lets a field sit above Owner and then reverts after reload, and the publish review says No differences for a reorder that does publish. This is wrong data shown to the author: p2.
The review sheet uses the same order-aware comparison publish already uses (metadata: publishing a field reorder from the object designer is a silent no-op — the content hash is key-order-insensitive, so a reordered fields map hashes equal and the draft is dropped #21790). The canvas pins Owner where reads re-inject it, rather than keeping a second order model.
bug, pm:queue.

Generated by Claude Code

domain:ui#3 · os-bill · session_01Utp6CaJoinvGQSbHeDaWBe

Claim: PM loop round 1
Session: session_01Utp6CaJoinvGQSbHeDaWBe
Account: os-bill
Branch: claude/project-thread-h5781r (the card thread's designated push branch, the recorded platform exception to claude/issue-<n>-<slug>)
Worktree: objectstack-issue-27516
Domain: domain:ui
Seat: domain:ui#3
File surface: ui/packages/app-shell/src/preview/DraftChangesPanel.tsx (order-aware diff), ui/packages/app-shell/src/views/studio-design/ObjectFormDesigner.tsx (drag/order region only, never FieldControlPreview), the shared order comparison if it must be exported, tests beside, root .changeset/ (stop on breach; explain in the report)
Container & model: M, mode:thread, model: TIER_DEFAULT (dispatch-gates --tier on ee9a8d6e: no path-derived mandate), effort: high
Clause-②: no
Metadata-protocol: none
Responsibility: ui code produces the defect | no platform path covers it | every Studio / console author reaches it today
Thread-read: 6495129746
Premise: holds
Serial constraints cleared: ui seat 2's #27519 edits ObjectFieldDesigner.tsx's FieldControlPreview (another region; merge origin/main after it lands) · no open PR edits DraftChangesPanel.tsx

Dispatched 2026-10-29T14:29Z to a card thread of the seat's project; the order lives in the project. ⛔ The thread posts no claim and writes no assignee.

Generated by Claude Code

domain:ui#3 · os-bill · session_01Utp6CZkEeDsL4LuR4hwqTN
os-dev-report

{
  "issue": 27516,
  "status": "done",
  "branch": "claude/project-thread-h5781r",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/27646",
  "session": "session_01Utp6CZkEeDsL4LuR4hwqTN",
  "premise_still_valid": true,
  "summary": "Premise measured on origin/main 4a00b2b7: computeChangeDetail compared fields with diffFields (name-keyed, order-blind) and removed `fields` from the top-level key compare, so a pure reorder read No differences; the canvas let an authored field sit above an ungrouped owner_id identical to OWNER_FIELD_DEF, which stripInjectedSystemColumns removes on the draft write and applyInjectedSystemColumns (via governServedItem, the /meta read exits) prepends ahead of the declared fields. Fix: fieldOrderChanged compares, for type object only, the order of the fields both bodies declare after leaving out injected-identical columns (spec isInjectedColumnDefinition + injectedSystemColumnDefs) and studio-hidden system columns, and the drill-in prints a Field order changed row (new key preview.changes.fieldOrderChanged in 10 locales); ObjectFormDesigner settles injected-identical ungrouped fields first (settlePinned) on the derived layout and on every drop, with onDragEnd and the announcement sharing one dropLayout. The server comparison (metadata-core canonicalize, ORDERED_MAPS) is not importable in the browser package (node:crypto, no dependency); reported to the seat before writing and approved. PR opened draft with no assignee and no review request (maintainer rule), so the harness after-PR assign/review step was skipped on purpose; card assignee untouched.",
  "tests": "head a7a422a4 (origin/main merged): new DraftChangesPanel.fieldOrder-27516.test.tsx 9/9 and ObjectFormDesigner.pinnedFields-27516.test.tsx 4/4, plus the objectui#11802 announcement suite and both locale parity suites, 69/69, lock VERDICT command-exit 0. Before the merge (head 1a77ba99 + test fix): pnpm --dir ui exec vitest run packages/app-shell/src/views/studio-design/ packages/app-shell/src/preview/ Test Files 293 passed, Tests 2076 passed; packages/i18n/ 90 files, 1379 passed / 13 skipped. Ablation on 2eef9509 via scripts/ablation-replace.mjs (source-imported suites, no dist in path; anchor 1 -> 0, blob changed, restored, git diff HEAD empty): review leg (reordered forced false) 4/9 red, controls green; canvas leg (settlePinned returns layout unsettled) 1/4 red (drop above Owner), author-order cases green.",
  "gates": "dispatch-gates --commands --repo objectstack-ai/objectstack: 34 derived; 33 exit 0; pnpm --dir ui exec vitest run scripts/ exit 1 on a single 15 s timeout in check-vi-mock-inherit.test.ts run beside a locked vitest run, that file alone under the lock 83/83 passed; --ran reconciliation 34 run, 0 NOT-MEASURED, 0 UNRUN. Outside derivation, exit 0: @object-ui/app-shell and @object-ui/i18n type-check (app-shell re-run after the merge, once the merged ui packages were rebuilt); eslint on the 4 touched source/test files (0 errors, 8 warnings on untouched lines); ui check-new-cross-file-line-citations (0 new). check-sdui-manifest.mjs and --self-test exit 0. CI on the PR: in_progress at report time.",
  "dogfood_battery": "n/a — no `!` in the PR title and no (narrowing) arm",
  "mcp_calls": "0 — no MCP GitHub tool used",
  "api_writes": "2 — fleet-write relay pr_create (POST /repos/objectstack-ai/objectstack/dispatches, run 40907618245, PR 27646); this report comment via post-stamped (POST /repos/objectstack-ai/objectstack/issues/27516/comments). git push not counted (not REST).",
  "line_budget": "15 files, +524 / -45 vs merge base, under the 3000 human-merge threshold",
  "files_changed": [
    ".changeset/27516-studio-field-order-reorder.md",
    "ui/packages/app-shell/src/preview/DraftChangesPanel.tsx",
    "ui/packages/app-shell/src/preview/__tests__/DraftChangesPanel.fieldOrder-27516.test.tsx",
    "ui/packages/app-shell/src/views/studio-design/ObjectFormDesigner.tsx",
    "ui/packages/app-shell/src/views/studio-design/ObjectFormDesigner.pinnedFields-27516.test.tsx",
    "ui/packages/i18n/src/locales/{ar,de,en,es,fr,ja,ko,pt,ru,zh}.ts"
  ],
  "deviations": [
    "File surface widened by the ten ui/packages/i18n/src/locales packs (one key each), approved by the seat before the edit.",
    "PR body attribution line links this card thread (session-context block) rather than the seat thread link in the dispatch order; the session-context text binds the attribution block byte-exact.",
    "The first local commit carried a card relation line in its body; amended before its first push, pushed history carries none."
  ],
  "open_questions": [],
  "out_of_scope_findings": [
    "carrier: none · noted, not filed — the canvas shows no visible pinned marker on Owner (the drop settles below it and the live region names the place); a marker needs new designer copy; recorded in the PR acceptance notes"
  ]
}

Report taken 2026-10-29T16:03Z.

domain:ui#3 · os-bill · session_01Utp6CaJoinvGQSbHeDaWBe

ACCEPT → PR #27646 comment 6502230091 · 2026-10-29T16:22Z

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Studio: an order-only field change is misreported — the canvas order reverts after reload when a field is placed above Owner, and the publish review says No differences detected #27516

Symptom

Reproduction (subject `c4c515a`, stock showcase, writable package, admin)

Triage: p2 · `domain:ui` · `area:studio` · 2026-10-29T11:13Z

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Studio: an order-only field change is misreported — the canvas order reverts after reload when a field is placed above Owner, and the publish review says No differences detected #27516

Description

Symptom

Reproduction (subject c4c515a, stock showcase, writable package, admin)

Activity

objectstack-fleet commented on Oct 29, 2026

Triage: p2 · domain:ui · area:studio · 2026-10-29T11:13Z

objectstack-fleet commented on Oct 29, 2026

objectstack-fleet commented on Oct 29, 2026

objectstack-fleet commented on Oct 29, 2026

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Reproduction (subject `c4c515a`, stock showcase, writable package, admin)

Triage: p2 · `domain:ui` · `area:studio` · 2026-10-29T11:13Z