From 8a2f1bc233ce40fcf376d92696839af28075e142 Mon Sep 17 00:00:00 2001
From: Jacob Overgaard <752371+iOvergaard@users.noreply.github.com>
Date: Tue, 23 Sep 2025 11:55:56 +0200
Subject: [PATCH] Localization: Fixes an issue where the fallback localization
 was not available after changing DefaultUILanguage (fixes #20216) (#20230)

fix: always load the default/fallback language code so it is available
---
 .../core/localization/registry/localization.registry.ts        | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/localization/registry/localization.registry.ts b/src/Umbraco.Web.UI.Client/src/packages/core/localization/registry/localization.registry.ts
index a51d3651b8..15d6b5349c 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/localization/registry/localization.registry.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/localization/registry/localization.registry.ts
@@ -118,6 +118,9 @@ export class UmbLocalizationRegistry {
 			)
 			// Subscribe to the observable to trigger the loading of translations
 			.subscribe();
+
+		// Always register the fallback language (en) to ensure there is always at least one language available
+		this.loadLanguage(UMB_DEFAULT_LOCALIZATION_CULTURE);
 	}
 
 	#loadExtension = async (extension: ManifestLocalization) => {