From cdcbc64a6a4297df9bdaa70003dfbbf3ac97efbc Mon Sep 17 00:00:00 2001
From: rebornix <penn.lv@gmail.com>
Date: Tue, 7 Apr 2020 14:37:57 -0700
Subject: [PATCH] Fix #94357

---
 src/vs/workbench/api/common/extHostNotebook.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/vs/workbench/api/common/extHostNotebook.ts b/src/vs/workbench/api/common/extHostNotebook.ts
index 71739380fcf..5e2ce8a9c3a 100644
--- a/src/vs/workbench/api/common/extHostNotebook.ts
+++ b/src/vs/workbench/api/common/extHostNotebook.ts
@@ -184,11 +184,17 @@ export class ExtHostNotebookDocument extends Disposable implements vscode.Notebo
 			...notebookDocumentMetadataDefaults,
 			...newMetadata
 		};
+		if (this._metadataChangeListener) {
+			this._metadataChangeListener.dispose();
+		}
+
 		const observableMetadata = getObservable(newMetadata);
 		this._metadata = observableMetadata.proxy;
 		this._metadataChangeListener = this._register(observableMetadata.onDidChange(() => {
 			this.updateMetadata();
 		}));
+
+		this.updateMetadata();
 	}
 
 	private _displayOrder: string[] = [];