From 73cc30f50f653af0484f33fb1bfca68f2281968d Mon Sep 17 00:00:00 2001
From: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Mon, 8 Dec 2025 10:17:13 +0900
Subject: fix(frontend): ロード時の言語判定結果が保存されない問題を修正
 (#16956)
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* fix(frontend): ロード時の言語判定結果が保存されない問題を修正

* Update Changelog
---
 CHANGELOG.md                                  | 2 +-
 packages/frontend-embed/public/loader/boot.js | 2 ++
 packages/frontend/public/loader/boot.js       | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1caffeceef..8d2db60739 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@
 -
 
 ### Client
--
+-　Fix: 初回読み込み時などに、言語設定で不整合が発生することがある問題を修正
 
 ### Server
 -
diff --git a/packages/frontend-embed/public/loader/boot.js b/packages/frontend-embed/public/loader/boot.js
index ba6366b3db..9b3d27873b 100644
--- a/packages/frontend-embed/public/loader/boot.js
+++ b/packages/frontend-embed/public/loader/boot.js
@@ -70,6 +70,8 @@
 			importAppScript();
 		});
 	}
+
+	localStorage.setItem('lang', lang);
 	//#endregion
 
 	async function addStyle(styleText) {
diff --git a/packages/frontend/public/loader/boot.js b/packages/frontend/public/loader/boot.js
index ab4b158287..8aafb282aa 100644
--- a/packages/frontend/public/loader/boot.js
+++ b/packages/frontend/public/loader/boot.js
@@ -42,6 +42,8 @@
 		console.error('invalid lang value detected!!!', typeof lang, lang);
 		lang = 'en-US';
 	}
+
+	localStorage.setItem('lang', lang);
 	//#endregion
 
 	//#region Script
-- 
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