From 97e646c0da405def8331094ef03343499157adb5 Mon Sep 17 00:00:00 2001
From: Matt Bierner <matb@microsoft.com>
Date: Tue, 2 Nov 2021 12:57:49 -0700
Subject: [PATCH] Update preview if text document is reopened

Fixes #135568
---
 .../markdown-language-features/src/features/preview.ts      | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/extensions/markdown-language-features/src/features/preview.ts b/extensions/markdown-language-features/src/features/preview.ts
index 3009c910855..d55147ed933 100644
--- a/extensions/markdown-language-features/src/features/preview.ts
+++ b/extensions/markdown-language-features/src/features/preview.ts
@@ -161,6 +161,12 @@ class MarkdownPreview extends Disposable implements WebviewResourceProvider {
 			}
 		}));
 
+		this._register(vscode.workspace.onDidOpenTextDocument(document => {
+			if (this.isPreviewOf(document.uri)) {
+				this.refresh();
+			}
+		}));
+
 		const watcher = this._register(vscode.workspace.createFileSystemWatcher(resource.fsPath));
 		this._register(watcher.onDidChange(uri => {
 			if (this.isPreviewOf(uri)) {