diff --git a/src/vs/workbench/api/common/extHostNotebook.ts b/src/vs/workbench/api/common/extHostNotebook.ts
index c0629a4b92c..0aeb1987388 100644
--- a/src/vs/workbench/api/common/extHostNotebook.ts
+++ b/src/vs/workbench/api/common/extHostNotebook.ts
@@ -421,7 +421,7 @@ export class ExtHostNotebookEditor implements vscode.NotebookEditor {
 		public document: ExtHostNotebookDocument,
 		private _documentsAndEditors: ExtHostDocumentsAndEditors
 	) {
-		const regex = new RegExp(/cell_(\d)*\./g);
+		const regex = new RegExp(/cell_(\d*)\./g);
 		this._documentsAndEditors.onDidAddDocuments(documents => {
 			for (const data of documents) {
 				let textDocument = data.document;
diff --git a/src/vs/workbench/contrib/notebook/browser/notebookEditor.ts b/src/vs/workbench/contrib/notebook/browser/notebookEditor.ts
index 5290d41ef6e..3ba7612ff72 100644
--- a/src/vs/workbench/contrib/notebook/browser/notebookEditor.ts
+++ b/src/vs/workbench/contrib/notebook/browser/notebookEditor.ts
@@ -242,11 +242,6 @@ export class NotebookEditor extends BaseEditor implements INotebookEditor {
 	}
 
 	onHide() {
-		this.viewCells.forEach(cell => {
-			if (cell.getText() !== '') {
-				cell.isEditing = false;
-			}
-		});
 
 		if (this.webview) {
 			this.localStore.clear();