From ffc4b9540bfb0a4911e8bb1787dbb313486e01ad Mon Sep 17 00:00:00 2001
From: Aaron Munger <2019016+amunger@users.noreply.github.com>
Date: Fri, 21 Nov 2025 07:40:52 -0800
Subject: [PATCH] don't mirror appending output items (#278458)

dont mirror appending output items
---
 .../chatEditing/chatEditingModifiedNotebookEntry.ts   | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingModifiedNotebookEntry.ts b/src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingModifiedNotebookEntry.ts
index 963ae5404f8..38b6b9b6f7a 100644
--- a/src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingModifiedNotebookEntry.ts
+++ b/src/vs/workbench/contrib/chat/browser/chatEditing/chatEditingModifiedNotebookEntry.ts
@@ -389,16 +389,7 @@ export class ChatEditingModifiedNotebookEntry extends AbstractChatEditingModifie
 					break;
 				}
 				case NotebookCellsChangeType.OutputItem: {
-					const index = getCorrespondingOriginalCellIndex(event.index, this._cellsDiffInfo.get());
-					if (typeof index === 'number') {
-						const edit: ICellEditOperation = {
-							editType: CellEditType.OutputItems,
-							outputId: event.outputId,
-							append: event.append,
-							items: event.outputItems
-						};
-						this.originalModel.applyEdits([edit], true, undefined, () => undefined, undefined, false);
-					}
+					// outputs are shared between original and modified model, so the original model is already updated.
 					break;
 				}
 				case NotebookCellsChangeType.Move: {