From f8eb203643352e240ce3f46f2f6a23db8fdc6690 Mon Sep 17 00:00:00 2001
From: Lucy Zhang <luczhan@microsoft.com>
Date: Wed, 23 Sep 2020 07:10:36 -0700
Subject: [PATCH] add event.preventDefault() (#12564)

---
 .../notebook/browser/cellViews/placeholderCell.component.ts      | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/sql/workbench/contrib/notebook/browser/cellViews/placeholderCell.component.ts b/src/sql/workbench/contrib/notebook/browser/cellViews/placeholderCell.component.ts
index 74a9f58a0c..e6e594e5dc 100644
--- a/src/sql/workbench/contrib/notebook/browser/cellViews/placeholderCell.component.ts
+++ b/src/sql/workbench/contrib/notebook/browser/cellViews/placeholderCell.component.ts
@@ -70,6 +70,7 @@ export class PlaceholderCellComponent extends CellView implements OnInit, OnChan
 
 	public addCell(cellType: string, event?: Event): void {
 		if (event) {
+			event.preventDefault();
 			event.stopPropagation();
 		}
 		let type: CellType = <CellType>cellType;