diff --git a/src/BootstrapBlazor/Localization/Json/JsonStringLocalizer.cs b/src/BootstrapBlazor/Localization/Json/JsonStringLocalizer.cs
index fb7386858d7..9bfcdfc3e01 100644
--- a/src/BootstrapBlazor/Localization/Json/JsonStringLocalizer.cs
+++ b/src/BootstrapBlazor/Localization/Json/JsonStringLocalizer.cs
@@ -5,7 +5,6 @@
 
 using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Logging;
-using System.Collections.Concurrent;
 using System.Globalization;
 using System.Reflection;
 using System.Resources;
@@ -105,33 +104,28 @@ public override LocalizedString this[string name]
         return ret;
     }
 
-    private readonly ConcurrentDictionary<string, object?> _missingManifestCache = [];
     private string? GetStringFromJson(string name)
     {
-        // <para lang="zh">从 json 本地化文件中获取字符串</para>
-        // <para lang="en">get string from json localization file</para>
         var localizerStrings = MergeResolveLocalizers(CacheManager.GetAllStringsByTypeName(Assembly, typeName));
         var cacheKey = $"name={name}&culture={CultureInfo.CurrentUICulture.Name}";
         string? ret = null;
-        if (!_missingManifestCache.ContainsKey(cacheKey))
+
+        var l = localizerStrings.Find(i => i.Name == name);
+        if (l is { ResourceNotFound: false })
         {
-            var l = localizerStrings.Find(i => i.Name == name);
-            if (l is { ResourceNotFound: false })
-            {
-                ret = l.Value;
-            }
-            else
-            {
-                // <para lang="zh">如果没有找到资源信息则尝试从父类中查找</para>
-                // <para lang="en">If resource info not found, try to find from base class</para>
-                ret ??= GetStringFromBaseType(name);
+            ret = l.Value;
+        }
+        else
+        {
+            // <para lang="zh">如果没有找到资源信息则尝试从父类中查找</para>
+            // <para lang="en">If resource info not found, try to find from base class</para>
+            ret ??= GetStringFromBaseType(name);
 
-                if (ret is null)
-                {
-                    // <para lang="zh">加入缺失资源信息缓存中</para>
-                    // <para lang="en">Add to missing resource info cache</para>
-                    HandleMissingResourceItem(name);
-                }
+            if (ret is null)
+            {
+                // <para lang="zh">加入缺失资源信息缓存中</para>
+                // <para lang="en">Add to missing resource info cache</para>
+                HandleMissingResourceItem(name);
             }
         }
         return ret;
@@ -172,11 +166,15 @@ private List<LocalizedString> MergeResolveLocalizers(IEnumerable<LocalizedString
     private void HandleMissingResourceItem(string name)
     {
         localizationMissingItemHandler.HandleMissingItem(name, typeName, CultureInfo.CurrentUICulture.Name);
-        if (jsonLocalizationOptions.IgnoreLocalizerMissing == false)
+        if (jsonLocalizationOptions.IgnoreLocalizerMissing)
+        {
+            return;
+        }
+
+        if (Logger.IsEnabled(LogLevel.Information))
         {
             Logger.LogInformation("{JsonStringLocalizerName} searched for '{Name}' in '{TypeName}' with culture '{CultureName}' not found.", nameof(JsonStringLocalizer), name, typeName, CultureInfo.CurrentUICulture.Name);
         }
-        _missingManifestCache.TryAdd($"name={name}&culture={CultureInfo.CurrentUICulture.Name}", null);
     }
 
     private List<LocalizedString>? _allLocalizedStrings;
diff --git a/test/UnitTest/Localization/JsonStringLocalizerTest.cs b/test/UnitTest/Localization/JsonStringLocalizerTest.cs
index 1d482e2b28b..2bc5c3ab7a8 100644
--- a/test/UnitTest/Localization/JsonStringLocalizerTest.cs
+++ b/test/UnitTest/Localization/JsonStringLocalizerTest.cs
@@ -215,7 +215,8 @@ public void GetAllStrings_FromResource()
         Assert.NotEmpty(items);
         Assert.Equal("test-name", items.First(i => i.Name == "Name").Value);
 
-        var name = Utility.GetDisplayName(typeof(Dummy), "DummyName");
+        var type = typeof(Dummy);
+        var name = Utility.GetDisplayName(type, "DummyName");
         Assert.Equal("test-name", name);
     }
 
@@ -498,5 +499,8 @@ public void GetAllStrings_FromInject()
         var localizer = provider.GetRequiredService<IStringLocalizer<Foo>>();
         var item = localizer["Foo.Name"];
         Assert.NotEqual("Foo.Name", item);
+
+        item = localizer["missing-item"];
+        Assert.True(item.ResourceNotFound);
     }
 }