[Error] unhandlederror-ListError [NotebookCellList] Invalid index -1

## Error Message
````
unhandlederror-ListError [NotebookCellList] Invalid index -1
````

## Stack Trace
    at VBe.getCellViewScrollTop ([./src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts:754:9](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts#L754))
    at Hj.getAbsoluteTopOfElement ([./src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts:2132:0](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts#L2132))
    at G1i.layoutEditor ([./src/vs/workbench/contrib/notebook/browser/view/cellParts/codeCell.ts:873:0](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/workbench/contrib/notebook/browser/view/cellParts/codeCell.ts#L873))
    at tEe.value ([./src/vs/workbench/contrib/notebook/browser/view/cellParts/codeCell.ts:283:0](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/workbench/contrib/notebook/browser/view/cellParts/codeCell.ts#L283))
    at D._deliver ([./src/vs/base/common/event.ts:1364:12](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1364))
    at D._deliverQueue ([./src/vs/base/common/event.ts:1375:8](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1375))
    at D.fire ([./src/vs/base/common/event.ts:1399:8](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1399))
    at tEe.value ([./src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts:1041:0](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts#L1041))
    at D._deliver ([./src/vs/base/common/event.ts:1364:12](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1364))
    at D._deliverQueue ([./src/vs/base/common/event.ts:1375:8](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1375))
    at D.fire ([./src/vs/base/common/event.ts:1399:8](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1399))
    at tEe.value ([./src/vs/base/browser/ui/scrollbar/scrollableElement.ts:238:18](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/browser/ui/scrollbar/scrollableElement.ts#L238))
    at D._deliver ([./src/vs/base/common/event.ts:1364:12](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1364))
    at D.fire ([./src/vs/base/common/event.ts:1395:8](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/event.ts#L1395))
    at PR._setState ([./src/vs/base/common/scrollable.ts:393:17](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/scrollable.ts#L393))
    at PR.setScrollPositionNow ([./src/vs/base/common/scrollable.ts:303:7](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/common/scrollable.ts#L303))
    at mW.setScrollPosition ([./src/vs/base/browser/ui/scrollbar/scrollableElement.ts:703:20](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/browser/ui/scrollbar/scrollableElement.ts#L703))
    at CQt.setScrollTop ([./src/vs/base/browser/ui/list/listView.ts:1108:25](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/browser/ui/list/listView.ts#L1108))
    at CQt.updateElementHeight ([./src/vs/base/browser/ui/list/listView.ts:601:7](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/base/browser/ui/list/listView.ts#L601))
    at VBe.updateElementHeight2 ([./src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts:1242:13](https://github.com/microsoft/vscode/blob/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75/src/vs/workbench/contrib/notebook/browser/view/notebookCellList.ts#L1242))

Raw Stack Trace (minified)

````
Error: ListError [NotebookCellList] Invalid index -1 at VBe.getCellViewScrollTop (out/vs/workbench/workbench.desktop.main.js:2276:39451) at Hj.getAbsoluteTopOfElement (out/vs/workbench/workbench.desktop.main.js:2628:23115) at G1i.layoutEditor (out/vs/workbench/workbench.desktop.main.js:2481:93754) at tEe.value (out/vs/workbench/workbench.desktop.main.js:2481:82077) at D._deliver (out/vs/workbench/workbench.desktop.main.js:433:3268) at D._deliverQueue (out/vs/workbench/workbench.desktop.main.js:433:3357) at D.fire (out/vs/workbench/workbench.desktop.main.js:433:3692) at tEe.value (out/vs/workbench/workbench.desktop.main.js:2628:3173) at D._deliver (out/vs/workbench/workbench.desktop.main.js:433:3268) at D._deliverQueue (out/vs/workbench/workbench.desktop.main.js:433:3357) at D.fire (out/vs/workbench/workbench.desktop.main.js:433:3692) at tEe.value (out/vs/workbench/workbench.desktop.main.js:513:36771) at D._deliver (out/vs/workbench/workbench.desktop.main.js:433:3268) at D.fire (out/vs/workbench/workbench.desktop.main.js:433:3587) at PR._setState (out/vs/workbench/workbench.desktop.main.js:442:22983) at PR.setScrollPositionNow (out/vs/workbench/workbench.desktop.main.js:442:21376) at mW.setScrollPosition (out/vs/workbench/workbench.desktop.main.js:513:45279) at CQt.setScrollTop (out/vs/workbench/workbench.desktop.main.js:715:24886) at CQt.updateElementHeight (out/vs/workbench/workbench.desktop.main.js:715:15672) at VBe.updateElementHeight2 (out/vs/workbench/workbench.desktop.main.js:2276:46569) at a (out/vs/workbench/workbench.desktop.main.js:2482:7583) at KQt.layoutNotebookCell (out/vs/workbench/workbench.desktop.main.js:2482:7909) at Hj.layoutNotebookCell (out/vs/workbench/workbench.desktop.main.js:2628:26600) at tEe.value (out/vs/workbench/workbench.desktop.main.js:2628:14402) at ng._deliver (out/vs/workbench/workbench.desktop.main.js:433:3268) at ng._deliverQueue (out/vs/workbench/workbench.desktop.main.js:433:3357) at ng.fire (out/vs/workbench/workbench.desktop.main.js:433:3692) at ng.fire (out/vs/workbench/workbench.desktop.main.js:433:5062) at Sg._fireOnDidChangeLayout (out/vs/workbench/workbench.desktop.main.js:2275:26809) at Sg.layoutChange (out/vs/workbench/workbench.desktop.main.js:2275:26664) at Sg.updateOutputHeight (out/vs/workbench/workbench.desktop.main.js:2276:143) at Hj._updateOutputHeight (out/vs/workbench/workbench.desktop.main.js:2628:38512) at tEe.value (out/vs/workbench/workbench.desktop.main.js:2481:2840) at D._deliver (out/vs/workbench/workbench.desktop.main.js:433:3268) at D.fire (out/vs/workbench/workbench.desktop.main.js:433:3587) at out/vs/workbench/workbench.desktop.main.js:5729:17310 at out/vs/workbench/workbench.desktop.main.js:5729:23801 at Set.forEach () at _messagePort.onmessage (out/vs/workbench/workbench.desktop.main.js:5729:23790)
````

## Details
| Property | Value |
| --- | --- |
| Bucket ID | [`e78c148e-9c30-c1d8-29b1-850d78ae70cc`](https://errors.code.visualstudio.com/bucket/e78c148e-9c30-c1d8-29b1-850d78ae70cc?product=VSCode&extension=core&commit=e4c7e7b1d6d060162f4aa7f8225271b67ce1df75) |
| Version | 1.131.0 |
| Commit | [`e4c7e7b1`](https://insiders.vscode.dev/github/microsoft/vscode/tree/e4c7e7b1d6d060162f4aa7f8225271b67ce1df75) |
| Last Seen | Mon Aug 03 2026 23:59:46 GMT+0000 (Coordinated Universal Time) |
| Platforms | Mac, Windows, Linux |
| Product | VSCode |

---
*This issue was automatically created from the VS Code Errors Dashboard*