From 7422189a88caf28f3c29b3416cda689a656eb232 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zolt=C3=A1n=20Bedi?= <zoltan.bedi@gmail.com>
Date: Wed, 13 Oct 2021 11:59:03 +0200
Subject: [PATCH] Fix: State timeline tooltip not showing (#40100)

* Fix: State timeline tooltip not showing

* Check transformation instead of refId
---
 .../app/plugins/panel/state-timeline/StateTimelinePanel.tsx  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/public/app/plugins/panel/state-timeline/StateTimelinePanel.tsx b/public/app/plugins/panel/state-timeline/StateTimelinePanel.tsx
index cbc035e39d7..ba9cb48851a 100755
--- a/public/app/plugins/panel/state-timeline/StateTimelinePanel.tsx
+++ b/public/app/plugins/panel/state-timeline/StateTimelinePanel.tsx
@@ -49,7 +49,10 @@ export const StateTimelinePanel: React.FC<TimelinePanelProps> = ({
        * Render nothing in this case to prevent error.
        * See https://github.com/grafana/support-escalations/issues/932
        */
-      if (alignedData.fields.length - 1 !== data.length || !alignedData.fields[seriesIdx]) {
+      if (
+        (!alignedData.meta?.transformations?.length && alignedData.fields.length - 1 !== data.length) ||
+        !alignedData.fields[seriesIdx]
+      ) {
         return null;
       }