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[Error] unhandlederror-TreeError [BreadcrumbsOutlinePicker] Tree element not found: [object Object] #316635

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[Error] unhandlederror-TreeError [BreadcrumbsOutlinePicker] Tree element not found: [object Object]#316635
#318323
#316637
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ai-analyzedAI automation workflow has run an analysis of this issue and provided a comment.ai-generatedGenerated by AI automation workflowsbugIssue identified by VS Code Team member as probable bugerror-telemetryVS Code - Issues generated by telemetryrecent-regressionstable-anomaly

Description

@vs-code-engineering
vs-code-engineering
bot
opened on May 15, 2026

Error Message

unhandlederror-TreeError [BreadcrumbsOutlinePicker] Tree element not found: [object Object]

Stack Trace

    at AK.getElementLocation (./src/vs/base/browser/ui/tree/objectTreeModel.ts:313:9)
    at AK.expandTo (./src/vs/base/browser/ui/tree/objectTreeModel.ts:261:24)
    at $F.reveal (./src/vs/base/browser/ui/tree/abstractTree.ts:3082:0)
    at gHt._setInput (./src/vs/workbench/browser/parts/editor/breadcrumbsPicker.ts:496:0)
    at gHt.show (./src/vs/workbench/browser/parts/editor/breadcrumbsPicker.ts:122:0)
    at Object.getAnchor (./src/vs/workbench/browser/parts/editor/breadcrumbsControl.ts:569:0)
    at a.doLayout (./src/vs/base/browser/ui/contextview/contextview.ts:237:46)
    at a.show (./src/vs/base/browser/ui/contextview/contextview.ts:205:7)
    at w1t.showContextView (./src/vs/platform/contextview/browser/contextViewService.ts:46:19)
    at Qc._onSelectEvent (./src/vs/workbench/browser/parts/editor/breadcrumbsControl.ts:512:0)
    at T._deliver (./src/vs/base/common/event.ts:1364:12)
    at T.fire (./src/vs/base/common/event.ts:1395:8)
    at vW._select (./src/vs/base/browser/ui/breadcrumbs/breadcrumbsWidget.ts:277:24)
    at vW.setSelection (./src/vs/base/browser/ui/breadcrumbs/breadcrumbsWidget.ts:263:7)
    at Qc._onFocusEvent (./src/vs/workbench/browser/parts/editor/breadcrumbsControl.ts:470:0)
    at T._deliver (./src/vs/base/common/event.ts:1364:12)
    at T.fire (./src/vs/base/common/event.ts:1395:8)
    at vW._focus (./src/vs/base/browser/ui/breadcrumbs/breadcrumbsWidget.ts:227:23)
    at vW._onClick (./src/vs/base/browser/ui/breadcrumbs/breadcrumbsWidget.ts:359:9)
    at (anonymous) (./src/vs/base/browser/ui/breadcrumbs/breadcrumbsWidget.ts:85:92)

Raw Stack Trace (minified) 
Error: TreeError [BreadcrumbsOutlinePicker] Tree element not found: [object Object]     at AK.getElementLocation (out/vs/workbench/workbench.desktop.main.js:861:10080)     at AK.expandTo (out/vs/workbench/workbench.desktop.main.js:861:9425)     at $F.reveal (out/vs/workbench/workbench.desktop.main.js:861:2574)     at gHt._setInput (out/vs/workbench/workbench.desktop.main.js:1207:17799)     at gHt.show (out/vs/workbench/workbench.desktop.main.js:1207:12518)     at Object.getAnchor (out/vs/workbench/workbench.desktop.main.js:1207:27676)     at a.doLayout (out/vs/workbench/workbench.desktop.main.js:809:3770)     at a.show (out/vs/workbench/workbench.desktop.main.js:809:3486)     at w1t.showContextView (out/vs/workbench/workbench.desktop.main.js:1875:26937)     at Qc._onSelectEvent (out/vs/workbench/workbench.desktop.main.js:1207:26633)     at T._deliver (out/vs/workbench/workbench.desktop.main.js:405:3268)     at T.fire (out/vs/workbench/workbench.desktop.main.js:405:3587)     at vW._select (out/vs/workbench/workbench.desktop.main.js:1207:1749)     at vW.setSelection (out/vs/workbench/workbench.desktop.main.js:1207:1505)     at Qc._onFocusEvent (out/vs/workbench/workbench.desktop.main.js:1207:25996)     at T._deliver (out/vs/workbench/workbench.desktop.main.js:405:3268)     at T.fire (out/vs/workbench/workbench.desktop.main.js:405:3587)     at vW._focus (out/vs/workbench/workbench.desktop.main.js:1207:831)     at vW._onClick (out/vs/workbench/workbench.desktop.main.js:1207:3078)     at out/vs/workbench/workbench.desktop.main.js:1203:80196     at HTMLDivElement.<anonymous> (out/vs/workbench/workbench.desktop.main.js:411:2822)

Details

Property Value
Bucket ID b210f06d-710d-2a79-c9e3-af72f7ed3d8a
Version 1.120.0
Commit 0958016b
Last Seen Wed May 13 2026 23:55:52 GMT+0000 (Coordinated Universal Time)
Platforms Linux, Windows, Mac
Product VSCode

This issue was automatically created from the VS Code Errors Dashboard

Activity

  1. vs-code-engineering
    assigned
    Bryan Chen (bryanchen-d)
    on May 15, 2026
  2. vs-code-engineering
    added
    bugIssue identified by VS Code Team member as probable bug
    error-telemetryVS Code - Issues generated by telemetry
    recent-regression
    stable-anomaly
    ai-generatedGenerated by AI automation workflows
    *fixTrigger a agentic workflow to provide analysis and propose PR.
    on May 15, 2026

  3. vs-code-engineering commented on May 15, 2026

    @vs-code-engineering
    vs-code-engineeringBot
    on May 15, 2026 – with VS Code Engineering · Hidden as outdated
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  4. vs-code-engineering
    added a commit that references this issue on May 15, 2026

    fix: guard tree.reveal() with hasElement check in breadcrumbs picker (f…

    fbc1d3d
  5. vs-code-engineering
    added
    ai-analyzedAI automation workflow has run an analysis of this issue and provided a comment.
    and removed
    *fixTrigger a agentic workflow to provide analysis and propose PR.
    on May 15, 2026
  6. vs-code-engineering
    unassigned
    Bryan Chen (bryanchen-d)
    on May 15, 2026

  7. vs-code-engineering commented on Jun 1, 2026

    @vs-code-engineering
    vs-code-engineeringBot
    on Jun 1, 2026 – with VS Code Engineering · Hidden as outdated
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  8. vs-code-engineering commented on Jun 4, 2026

    @vs-code-engineering
    vs-code-engineeringBot
    on Jun 4, 2026 – with VS Code Engineering · Hidden as outdated
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  9. vs-code-engineering commented on Jun 11, 2026

    @vs-code-engineering
    vs-code-engineeringBot
    on Jun 11, 2026 – with VS Code Engineering · Hidden as outdated
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  10. vs-code-engineering commented on Jul 6, 2026

    @vs-code-engineering
    vs-code-engineeringBot
    on Jul 6, 2026 – with VS Code Engineering · Hidden as outdated
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  11. vs-code-engineering commented on Jul 10, 2026

    @vs-code-engineering
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    on Jul 10, 2026 – with VS Code Engineering · Hidden as outdated
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  12. vs-code-engineering commented on Jul 27, 2026

    @vs-code-engineering
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    on Jul 27, 2026 – with VS Code Engineering · Hidden as outdated
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  13. vs-code-engineering commented on Oct 9, 2026

    @vs-code-engineering
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    on Oct 9, 2026 – with VS Code Engineering · Hidden as outdated
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  14. vs-code-engineering commented on Oct 19, 2026

    @vs-code-engineering
    vs-code-engineeringBot
    on Oct 19, 2026 – with VS Code Engineering
    ContributorAuthor

    Stable Release Anomaly Details

    This error continues to appear in v1.142.0 (previously tracked since v1.120.0) with a new bucket ID:

    • Bucket: 4d979d12 — 7,834 users
    • Anomaly type: new (bucket-ID drift)
    • Previous stable: 1.141.2
    • Current stable: 1.142.0

    The deminified path remains objectTreeModel.ts → abstractTree.ts → breadcrumbsPicker.ts → breadcrumbsControl.ts, so this is linked for continuity.

    Generated by errors-stable-scan · copilot · gpt60 · 192.8 AIC · ⌖ 11.3 AIC · ⊞ 25.3K · ◷

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