From de8dd9e1fca7a8bea5dc0a628e2d77551d8e602e Mon Sep 17 00:00:00 2001
From: Matthias Wirth <matthias.wirth@gmail.com>
Date: Fri, 8 May 2020 10:25:12 +0200
Subject: [PATCH] avoid jumps/getTrace when switching back to a tab in
 showTrace

---
 html/early.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/html/early.js b/html/early.js
index 83fd5cb..0f173c0 100644
--- a/html/early.js
+++ b/html/early.js
@@ -219,6 +219,8 @@ if (typeof document.hidden !== "undefined") { // Opera 12.10 and Firefox 18 and
 function handleVisibilityChange() {
   if (!document[hidden]) {
       fetchData();
+      if (showTrace)
+          return;
       if (SelectedPlane)
         getTrace(SelectedPlane, SelectedPlane.icao, {});
   }