From ef1bd59897cb9e09b30c8d89844ebd633030976c Mon Sep 17 00:00:00 2001
From: Peng Lyu <penn.lv@gmail.com>
Date: Wed, 13 Dec 2023 14:03:20 -0800
Subject: [PATCH] fix #194090. fix cell decoration memory leak (#200786)

---
 .../contrib/notebook/browser/viewModel/notebookViewModelImpl.ts  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/vs/workbench/contrib/notebook/browser/viewModel/notebookViewModelImpl.ts b/src/vs/workbench/contrib/notebook/browser/viewModel/notebookViewModelImpl.ts
index 3e42b3fd7b2..385a37ad948 100644
--- a/src/vs/workbench/contrib/notebook/browser/viewModel/notebookViewModelImpl.ts
+++ b/src/vs/workbench/contrib/notebook/browser/viewModel/notebookViewModelImpl.ts
@@ -716,6 +716,7 @@ export class NotebookViewModel extends Disposable implements EditorFoldingStateD
 			if (handle !== undefined) {
 				const cell = this.getCellByHandle(handle);
 				cell?.deltaCellDecorations([id], []);
+				this._decorationIdToCellMap.delete(id);
 			}
 		});