com.unity.localization@1.5.10

## [1.5.10] - 2026-03-12

### Fixed

- Added missing `Serializable` attribute to `FormatterBase`. ([LOC-1282](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1282))
- Added support for BCP 47 resource locale codes on Android 21+. (UUM-132466). ([UUM-132466](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-132466))
- Adjusted the localization tables window so only the search bar shrinks/expands and all other buttons remain fixed. (LOC-1278)
- Changed the Table Key ID Field so it is a selectable label and can now be copied. (LOC-1305)
- Disabled the horizontal scroll in the ReorderableListView component. It was occasionally appearing when unnecessary and should not be required. ([LOC-1287](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1287))
- Fix the samples not being included in the package data.
- Fixed alignment of Project Locale identifier field. ([LOC-1277](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1277))
- Fixed an issue where nested LocalizedStrings could not have their local variables queried. ([UUM-134944](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-134944))
- Fixed an issue where the ExcludeEntryFromExport metadata would be ignored when exporting to CSV and XLIFF if the first table entry was null. ([UUM-136670](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-136670))
- Fixed Android using the wrong app name locale codes for Indonesian and Hebrew. (LOC-1272)
- Fixed the wrong group being used to resolve assets when a SharedGroup was assigned to the GroupResolver. ([UUM-135659](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-135659))
- Fixed UI Builder picker so it saves the view state.
- Improved fast enter playmode support. (UUM-131023)
- Removed warning when using default localization settings. (LOC-1290)
- When a new String Table is added, the IsSmart flag will now be propagated to its entries if it is already consistently set across all existing tables. ([LOC-1274](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1274))

Author: Unity Technologies

.attestation.p7m

@@ -1 +1 @@
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.signature

@@ -2,6 +2,26 @@
 
 All notable changes to this package will be documented in this file.
 
+## [1.5.10] - 2026-03-12
+
+### Fixed
+
+- Added missing `Serializable` attribute to `FormatterBase`. ([LOC-1282](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1282))
+- Added support for BCP 47 resource locale codes on Android 21+. (UUM-132466). ([UUM-132466](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-132466))
+- Adjusted the localization tables window so only the search bar shrinks/expands and all other buttons remain fixed. (LOC-1278)
+- Changed the Table Key ID Field so it is a selectable label and can now be copied. (LOC-1305)
+- Disabled the horizontal scroll in the ReorderableListView component. It was occasionally appearing when unnecessary and should not be required. ([LOC-1287](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1287))
+- Fix the samples not being included in the package data.
+- Fixed alignment of Project Locale identifier field. ([LOC-1277](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1277))
+- Fixed an issue where nested LocalizedStrings could not have their local variables queried. ([UUM-134944](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-134944))
+- Fixed an issue where the ExcludeEntryFromExport metadata would be ignored when exporting to CSV and XLIFF if the first table entry was null. ([UUM-136670](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-136670))
+- Fixed Android using the wrong app name locale codes for Indonesian and Hebrew. (LOC-1272)
+- Fixed the wrong group being used to resolve assets when a SharedGroup was assigned to the GroupResolver. ([UUM-135659](https://issuetracker.unity3d.com/product/unity/issues/guid/UUM-135659))
+- Fixed UI Builder picker so it saves the view state.
+- Improved fast enter playmode support. (UUM-131023)
+- Removed warning when using default localization settings. (LOC-1290)
+- When a new String Table is added, the IsSmart flag will now be propagated to its entries if it is already consistently set across all existing tables. ([LOC-1274](https://issuetracker.unity3d.com/product/unity/issues/guid/LOC-1274))
+
 ## [1.5.9] - 2025-11-13
 
 ### Fixed

CHANGELOG.md

@@ -135,7 +135,7 @@ public void AddLocaleGroup(LocaleIdentifier identifier, AddressableAssetGroup gr
         /// <returns>The asset entry for the added asset.</returns>
         public virtual AddressableAssetEntry AddToGroup(Object asset, IList<LocaleIdentifier> locales, AddressableAssetSettings aaSettings, bool createUndo)
         {
-            var group = SharedGroup ?? GetGroup(locales, asset, aaSettings, createUndo);
+            var group = GetGroup(locales, asset, aaSettings, createUndo);
             var guid = GetAssetGuid(asset);
             var assetEntry = aaSettings.FindAssetEntry(guid);
 
@@ -238,7 +238,7 @@ static AddressableAssetGroup CreateNewGroup(string name, bool readOnly, Addressa
 
         AddressableAssetEntry GetAssetEntry(Object asset, AddressableAssetSettings aaSettings) => aaSettings.FindAssetEntry(GetAssetGuid(asset));
 
-        static string GetAssetGuid(Object asset)
+        internal virtual string GetAssetGuid(Object asset)
         {
             if (AssetDatabase.TryGetGUIDAndLocalFileIdentifier(asset, out var guid, out long _))
                 return guid;

Editor/Addressables/GroupResolver.cs

@@ -82,11 +82,14 @@ public static void AddLocalizationToAndroidGradleProject(string projectDirectory
             if (appInfo == null)
                 throw new ArgumentNullException(nameof(appInfo));
 
+            var minApi = (int)PlayerSettings.Android.minSdkVersion;
+            bool useBcp47 = minApi >= 21; // We can use BCP 47 language tags for resource folders on Android 5.0+ (API 21+). https://developer.android.com/guide/topics/resources/localization#bcp47-tags
+
             var project = new GradleProjectSettings();
             foreach (var locale in LocalizationEditorSettings.GetLocales())
             {
-                var localeIdentifier = GenerateAndroidLanguageCode(locale.Identifier);
-                GenerateLocalizedXmlFile("App Name", Path.Combine(Directory.CreateDirectory(Path.Combine(project.GetResFolderPath(projectDirectory), "values-b+" + localeIdentifier)).FullName, k_InfoFile), locale, appInfo);
+                var localeIdentifier = GenerateAndroidLanguageCode(locale.Identifier, useBcp47);
+                GenerateLocalizedXmlFile("App Name", Path.Combine(Directory.CreateDirectory(Path.Combine(project.GetResFolderPath(projectDirectory), "values-" + localeIdentifier)).FullName, k_InfoFile), locale, appInfo);
 
                 //Generate icons
                 var folderNames = new List<string>
@@ -127,22 +130,45 @@ public static void AddLocalizationToAndroidGradleProject(string projectDirectory
             androidManifest.SaveIfModified();
         }
 
-        internal static string GenerateAndroidLanguageCode(LocaleIdentifier localeIdentifier)
+        internal static string GenerateAndroidLanguageCode(LocaleIdentifier localeIdentifier, bool useBcp47)
         {
-            // When we use System Language as Locale Source Chinese (Simplified) code is represented as (zh-hans) and Chinese (Traditional) code is represented as (zh-hant).
-            // But Android Localization is case-sensitive and ony supports Chinese (Simplified) code as (zh-Hans) and Chinese (Traditional) code as (zh-Hant).
-            // https://developer.android.com/reference/java/util/Locale.LanguageRange
-            localeIdentifier = localeIdentifier.Code.Contains("hans") ? localeIdentifier.Code.Replace("hans", "Hans") : localeIdentifier.Code.Contains("hant") ? localeIdentifier.Code.Replace("hant", "Hant") : localeIdentifier;
+            // Normalize special languages
             var code = localeIdentifier.Code;
 
-            var IsSpecialLocaleIdentifier = code.Contains("Hans") || code.Contains("Hant") || code.Contains("Latn") || code.Contains("Cyrl") || code.Contains("Arab") || code.Contains("valencia");
+            // Indonesian and Hebrew legacy codes on Android
+            if (code.Equals("id", StringComparison.OrdinalIgnoreCase) || code.Equals("id-ID", StringComparison.OrdinalIgnoreCase))
+                code = "in";
+            else if (code.Equals("he", StringComparison.OrdinalIgnoreCase) || code.Equals("he-IL", StringComparison.OrdinalIgnoreCase))
+                code = "iw";
 
-            // The language is defined by a two-letter ISO 639-1 language code, optionally followed by a two letter ISO 3166-1-alpha-2 region code (preceded by lowercase r).
-            // The codes are not case-sensitive; the r prefix is used to distinguish the region portion. You cannot specify a region alone.
-            // https://developer.android.com/guide/topics/resources/providing-resources
-            localeIdentifier = code.Contains("-") ? IsSpecialLocaleIdentifier ? code.Replace("-", "+") : code.Replace("-", "-r") : localeIdentifier;
+            // Normalize Chinese scripts casing
+            code = code.Replace("hans", "Hans").Replace("hant", "Hant");
 
-            return localeIdentifier.Code;
+            if (useBcp47)
+            {
+                // Convert separators to + for BCP 47 resource folders
+                // e.g., zh-Hans-CN -> b+zh+Hans+CN
+                return "b+" + code.Replace("-", "+");
+            }
+            else
+            {
+                // Special handling for es-419
+                if (code.Equals("es-419", StringComparison.OrdinalIgnoreCase))
+                    return "es-rMX";
+
+                // Detect script/variant presence
+                bool hasSpecialSubtag = code.Contains("Hans") || code.Contains("Hant") ||
+                                        code.Contains("Latn") || code.Contains("Cyrl") ||
+                                        code.Contains("Arab") || code.Contains("valencia");
+
+                // Legacy -r folders: lang[-rREGION]
+                // Only insert -r if there is a hyphen and no script/variant that would be invalid pre-21
+                // e.g., en-GB -> en-rGB ; es-MX -> es-rMX
+                if (code.Contains("-") && !hasSpecialSubtag)
+                    return code.Replace("-", "-r");
+
+                return code;
+            }
         }
 
         static void GenerateIconDirectory(List<string> folderNames, string path, Locale locale)

Editor/Platform/Android/Player.cs

@@ -82,7 +82,7 @@ public static void Export(TextWriter writer, StringTableCollection collection, I
                     reporter?.ReportProgress("Writing Contents", 0.1f);
                     foreach (var row in collection.GetRowEnumeratorUnsorted())
                     {
-                        if (row.TableEntries[0] != null && row.TableEntries[0].SharedEntry.Metadata.HasMetadata<ExcludeEntryFromExport>())
+                        if (row.KeyEntry.Metadata.HasMetadata<ExcludeEntryFromExport>())
                             continue;
 
                         csvWriter.NextRecord();

Editor/Plugins/CSV/CSV.cs

@@ -191,7 +191,7 @@ public static void AddTableToDocument(IXliffDocument document, StringTable sourc
 
             foreach (var row in StringTableCollection.GetRowEnumerator(source, target))
             {
-                if (row.TableEntries[0] != null && row.TableEntries[0].SharedEntry.Metadata.HasMetadata<ExcludeEntryFromExport>())
+                if (row.KeyEntry.Metadata.HasMetadata<ExcludeEntryFromExport>())
                     continue;
 
                 var unit = group.AddNewTranslationUnit();

Editor/Plugins/Xliff/Xliff.cs

@@ -6,6 +6,7 @@
 using UnityEngine.Localization;
 using UnityEngine.Localization.Metadata;
 using UnityEngine.Localization.Tables;
+using UnityEngine.Pool;
 using static UnityEngine.Localization.Tables.SharedTableData;
 
 namespace UnityEditor.Localization
@@ -105,6 +106,52 @@ internal void MergeUpdatedEntries(HashSet<long> entriesToKeep, List<SharedTableE
             SharedData.Entries = sortedEntries;
         }
 
+        /// <inheritdoc/>
+        public override LocalizationTable AddNewTable(LocaleIdentifier localeIdentifier, string path)
+        {
+            // Record the Smart string entries so we can sync the new table to match.
+            using (HashSetPool<long>.Get(out var smartStringEntries))
+            {
+                var tables = StringTables;
+                foreach(var entry in SharedData.Entries)
+                {
+                    bool isSmart = false;
+                    foreach (var table in tables)
+                    {
+                        if (table.GetEntry(entry.Id)?.IsSmart != true)
+                        {
+                            isSmart = false;
+                            break;
+                        }
+                        isSmart = true;
+                    }
+
+                    // If all the entries are marked as smart then we want to do the same to the new table.
+                    if (isSmart)
+                        smartStringEntries.Add(entry.Id);
+                }
+
+                var newTable = base.AddNewTable(localeIdentifier, path);
+
+                // Now sync the new table's smart string entries.
+                var stringTable = (StringTable)newTable;
+                foreach (var entryId in smartStringEntries)
+                {
+                    var entry = stringTable.AddEntry(entryId, string.Empty);
+                    entry.IsSmart = true;
+                }
+
+                if (smartStringEntries.Count > 0)
+                {
+                    EditorUtility.SetDirty(stringTable);
+                    SaveChangesToDisk();
+                    LocalizationEditorSettings.EditorEvents.RaiseCollectionModified(this, this);
+                }
+
+                return newTable;
+            }
+        }
+
         /// <summary>
         /// Returns an enumerator that can be used to step through each key and its localized values, such as in a foreach loop.
         /// Internally <see cref="SharedTableData"/> and <see cref="StringTable"/>'s are separate assets with their own internal list of values.

Editor/Settings/StringTableCollection.cs

@@ -276,7 +276,12 @@ void RefreshTableDetails()
         void OnSelectEntry()
         {
             var provider = CreateSearchProvider();
+
+            #if UNITY_2022_3_OR_NEWER
+            var context = UnityEditor.Search.SearchService.CreateContext(new[] { provider }, string.Empty, SearchFlags.UseSessionSettings);
+            #else
             var context = UnityEditor.Search.SearchService.CreateContext(provider);
+            #endif
 
             var picker = new LocalizedReferencePicker<TCollection>(context, "table entry", m_TableProperty, m_EntryProperty);
             picker.Show();

Editor/UI/Localized Reference/TableReferenceField.cs

@@ -23,6 +23,7 @@ public override VisualElement CreatePropertyGUI(SerializedProperty property)
             foldout.BindProperty(property);
 
             var localeField = new ObjectField { objectType = typeof(Locale), value = LocalizationEditorSettings.GetLocale(code.stringValue) };
+            localeField.Q<Label>().RemoveFromClassList("unity-text-element"); // Prevent the margin being removed
             localeField.AddToClassList("unity-base-field__input");
             localeField.RegisterCallback<MouseDownEvent>(evt => evt.StopPropagation());
             localeField.RegisterCallback<MouseUpEvent>(evt => evt.StopPropagation());
@@ -35,6 +36,8 @@ public override VisualElement CreatePropertyGUI(SerializedProperty property)
             foldout.hierarchy[0].Add(localeField);
             foldout.hierarchy[0].hierarchy[0].RemoveFromClassList("unity-base-field__input");
             foldout.hierarchy[0].hierarchy[0].AddToClassList("unity-base-field__label");
+            foldout.hierarchy[0].hierarchy[0].style.paddingLeft = 0;
+            localeField.style.marginRight = 0;
 
             var codeField = new TextField { label = "Code" };
             codeField.RegisterValueChangedCallback(evt =>