From d3e2cc9128daac2ee54fdc6e352bf2778b0cd33c Mon Sep 17 00:00:00 2001
From: Ludeeus <ludeeus@ludeeus.dev>
Date: Sat, 9 Oct 2021 15:38:51 +0000
Subject: [PATCH] Add shouldUpdate

---
 src/components/ha-alert.ts | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/components/ha-alert.ts b/src/components/ha-alert.ts
index c27f9b825e..80be2fb3c8 100644
--- a/src/components/ha-alert.ts
+++ b/src/components/ha-alert.ts
@@ -7,7 +7,7 @@ import {
   mdiClose,
   mdiInformationOutline,
 } from "@mdi/js";
-import { css, html, LitElement } from "lit";
+import { css, html, LitElement, PropertyValues } from "lit";
 import { customElement, property } from "lit/decorators";
 import { classMap } from "lit/directives/class-map";
 import { fireEvent } from "../common/dom/fire_event";
@@ -47,6 +47,18 @@ class HaAlert extends LitElement {
 
   @property({ type: Boolean }) public rtl = false;
 
+  protected shouldUpdate(changedProps: PropertyValues): boolean {
+    if (changedProps.size !== 1 || !changedProps.has("hass")) {
+      return true;
+    }
+
+    const oldHass = changedProps.get("hass") as HomeAssistant;
+    if (!oldHass || !this.hass) {
+      return false;
+    }
+    return this.hass.language !== oldHass.language;
+  }
+
   public render() {
     return html`
       <div