diff --git a/extensions/markdown-language-features/preview-src/index.ts b/extensions/markdown-language-features/preview-src/index.ts
index bf383c1faea02..bea843ce55a1a 100644
--- a/extensions/markdown-language-features/preview-src/index.ts
+++ b/extensions/markdown-language-features/preview-src/index.ts
@@ -28,6 +28,10 @@ const state = {
 	...getData<any>('data-state')
 };
 
+if (originalState.resource !== state.resource) {
+	state.scrollProgress = undefined;
+}
+
 // Make sure to sync VS Code state here
 vscode.setState(state);