[Error] unhandlederror-TreeError [SCM History Tree] Unknown compressed tree node

[vs-code-engineering]

Error Message

unhandlederror-TreeError [SCM History Tree] Unknown compressed tree node

Stack Trace

    at NDi.setChildren (./src/vs/base/browser/ui/tree/compressedObjectTreeModel.ts:166:9)
    at fWt.setChildren (./src/vs/base/browser/ui/tree/compressedObjectTreeModel.ts:464:13)
    at GMe.setChildren (./src/vs/base/browser/ui/tree/objectTree.ts:297:13)
    at tC.render (./src/vs/base/browser/ui/tree/asyncDataTree.ts:1329:0)
    at tC.render (./src/vs/base/browser/ui/tree/asyncDataTree.ts:1620:0)
    at tC.refreshAndRenderNode (./src/vs/base/browser/ui/tree/asyncDataTree.ts:1092:0)

Raw Stack Trace (minified)

Error: TreeError [SCM History Tree] Unknown compressed tree node     at NDi.setChildren (out/vs/workbench/workbench.desktop.main.js:946:12194)     at fWt.setChildren (out/vs/workbench/workbench.desktop.main.js:946:16713)     at GMe.setChildren (out/vs/workbench/workbench.desktop.main.js:946:21169)     at tC.render (out/vs/workbench/workbench.desktop.main.js:946:41274)     at tC.render (out/vs/workbench/workbench.desktop.main.js:946:45804)     at tC.refreshAndRenderNode (out/vs/workbench/workbench.desktop.main.js:946:37876)

Details

Property	Value
Bucket ID	936d3c96-3e33-8eb3-8c5a-8ca47ff47cd1
Version	1.134.0
Commit	110a328e
Last Seen	Wed Aug 19 2026 23:51:22 GMT+0000 (Coordinated Universal Time)
Platforms	Mac, Windows, Linux
Product	VSCode

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This issue was automatically created from the VS Code Errors Dashboard

[vs-code-engineering]

Stable Release Anomaly Details

• Anomaly type: new (bucket absent in previous stable, present in current stable)
• Bucket ID: 936d3c96-3e33-8eb3-8c5a-8ca47ff47cd1
• Impact on current stable: 82 users / 88 hits
• Previous stable: 1.133.0
• Current stable: 1.134.0
• Commit range: 1.133.0...1.134.0

Insider-build narrowing was inconclusive — the errors-app search filter did not match this message signature on intermediate builds, so the range is reported at stable-release granularity.

Deminified stack (top frames):

TreeError [SCM History Tree] Unknown compressed tree node
  at compressedObjectTreeModel.ts:166:9  (setChildren)
  at compressedObjectTreeModel.ts:464:13 (setChildren)
  at objectTree.ts:297:13               (setChildren)
  at asyncDataTree.ts:1329               (render)
  at asyncDataTree.ts:1620               (render)
  at asyncDataTree.ts:1092               (refreshAndRenderNode)

The error originates in the compressed object tree model when setChildren encounters an unknown compressed node during an SCM History view refresh — likely a re-entrant/stale refresh in the SCM history provider. Compare against the related open trees issues (#328427 SearchView, #330875 AgentSessionsView) which share the same Tree element not found/compressed-tree family.

Generated by errors-stable-scan · opus48 · 174.3 AIC · ⌖ 17.1 AIC · ⊞ 13.1K · ◷