From 50e3593171298d20cf7f8b8600f7a3ab90d16b3a Mon Sep 17 00:00:00 2001
From: Matt Bierner <matb@microsoft.com>
Date: Tue, 15 Sep 2020 11:27:28 -0700
Subject: [PATCH] Add extra guard around when onDidChangeVisibility is fired

---
 src/vs/workbench/api/common/extHostWebviewView.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vs/workbench/api/common/extHostWebviewView.ts b/src/vs/workbench/api/common/extHostWebviewView.ts
index 5122096832e..9cbff1880d5 100644
--- a/src/vs/workbench/api/common/extHostWebviewView.ts
+++ b/src/vs/workbench/api/common/extHostWebviewView.ts
@@ -93,7 +93,7 @@ class ExtHostWebviewView extends Disposable implements vscode.WebviewView {
 	public get viewType(): string { return this.#viewType; }
 
 	/* internal */ _setVisible(visible: boolean) {
-		if (visible === this.#isVisible) {
+		if (visible === this.#isVisible || this.#isDisposed) {
 			return;
 		}