From 0e947788e039de72e11843b617110424619e4766 Mon Sep 17 00:00:00 2001
From: Daniel Imms <2193314+Tyriar@users.noreply.github.com>
Date: Tue, 22 Aug 2023 06:39:59 -0700
Subject: [PATCH] Don't smooth scroll when it's a no-op

Fixes #4713
---
 src/browser/Viewport.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/browser/Viewport.ts b/src/browser/Viewport.ts
index 7c1ae945..049bf77c 100644
--- a/src/browser/Viewport.ts
+++ b/src/browser/Viewport.ts
@@ -279,6 +279,9 @@ export class Viewport extends Disposable implements IViewport {
   }
 
   public scrollLines(disp: number): void {
+    if (disp === 0) {
+      return;
+    }
     if (!this._optionsService.rawOptions.smoothScrollDuration) {
       this._onRequestScrollLines.fire({ amount: disp, suppressScrollEvent: false });
     } else {