From 7182abfec5b4e3620ce81df4295dc3af925dc05d Mon Sep 17 00:00:00 2001
From: karwosts <32912880+karwosts@users.noreply.github.com>
Date: Wed, 14 Jun 2023 08:45:57 -0700
Subject: [PATCH] Fix history chart when final sensor state is unavailable
 (#16852)

---
 src/components/chart/state-history-chart-line.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/components/chart/state-history-chart-line.ts b/src/components/chart/state-history-chart-line.ts
index 50f164c094..1e34d204fb 100644
--- a/src/components/chart/state-history-chart-line.ts
+++ b/src/components/chart/state-history-chart-line.ts
@@ -376,6 +376,9 @@ class StateHistoryChartLine extends LitElement {
             lastNullDate = date;
           }
         });
+        if (lastNullDate !== null) {
+          pushData(lastNullDate, [null]);
+        }
       }
 
       // Add an entry for final values