From 963d316880f26131f34c92b8f753a5f6338ff89b Mon Sep 17 00:00:00 2001
From: Sergey Tarnavskiy <starnavskiy@thingsboard.io>
Date: Mon, 7 Sep 2020 11:23:05 +0300
Subject: [PATCH] Fixed bug with charts hiding in stack mode

---
 src/plugins/jquery.flot.stack.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/jquery.flot.stack.js b/src/plugins/jquery.flot.stack.js
index bcab864..9281e12 100644
--- a/src/plugins/jquery.flot.stack.js
+++ b/src/plugins/jquery.flot.stack.js
@@ -48,7 +48,7 @@ charts or filled areas).
                     break;
                 }
 
-                if (allseries[i].stack === s.stack) {
+                if (allseries[i].stack === s.stack && allseries[i].data.length) {
                     res = allseries[i];
                 }
             }