No need for the wrapped Lazy instance in image loading.

Flow.Launcher.Infrastructure/Image/ImageCache.cs

@@ -2,6 +2,7 @@
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Media;
 
@@ -26,7 +27,8 @@ public class ImageCache
         private const int MaxCached = 50;
         public ConcurrentDictionary<string, ImageUsage> Data { get; private set; } = new ConcurrentDictionary<string, ImageUsage>();
         private const int permissibleFactor = 2;
-
+        private SemaphoreSlim semaphore = new(1, 1);
+
         public void Initialization(Dictionary<string, int> usage)
         {
             foreach (var key in usage.Keys)
@@ -60,20 +62,29 @@ public ImageSource this[string path]
                             }
                 );
 
-                // To prevent the dictionary from drastically increasing in size by caching images, the dictionary size is not allowed to grow more than the permissibleFactor * maxCached size
-                // This is done so that we don't constantly perform this resizing operation and also maintain the image cache size at the same time
-                if (Data.Count > permissibleFactor * MaxCached)
+                SliceExtra();
+
+                async void SliceExtra()
                 {
-                    // To delete the images from the data dictionary based on the resizing of the Usage Dictionary.
-                    foreach (var key in Data.OrderBy(x => x.Value.usage).Take(Data.Count - MaxCached).Select(x => x.Key))
-                        Data.TryRemove(key, out _);
+                    // To prevent the dictionary from drastically increasing in size by caching images, the dictionary size is not allowed to grow more than the permissibleFactor * maxCached size
+                    // This is done so that we don't constantly perform this resizing operation and also maintain the image cache size at the same time
+                    if (Data.Count > permissibleFactor * MaxCached)
+                    {
+                        await semaphore.WaitAsync().ConfigureAwait(false);
+                        // To delete the images from the data dictionary based on the resizing of the Usage Dictionary
+                        // Double Check to avoid concurrent remove
+                        if (Data.Count > permissibleFactor * MaxCached)
+                            foreach (var key in Data.OrderBy(x => x.Value.usage).Take(Data.Count - MaxCached).Select(x => x.Key).ToArray())
+                                Data.TryRemove(key, out _);
+                        semaphore.Release();
+                    }
                 }
             }
         }
 
         public bool ContainsKey(string key)
         {
-            return Data.ContainsKey(key) && Data[key].imageSource != null;
+            return key is not null && Data.ContainsKey(key) && Data[key].imageSource != null;
         }
 
         public int CacheSize()

Flow.Launcher/ResultListBox.xaml

@@ -42,7 +42,7 @@
                             <ColumnDefinition Width="0" />
                         </Grid.ColumnDefinitions>
                         <Image x:Name="ImageIcon" Width="32" Height="32" HorizontalAlignment="Left"
-                               Source="{Binding Image.Value}" />
+                               Source="{Binding Image}" />
                         <Grid Margin="5 0 5 0" Grid.Column="1" HorizontalAlignment="Stretch">
                             <Grid.RowDefinitions>
                                 <RowDefinition />

Flow.Launcher/ViewModel/ResultViewModel.cs

@@ -11,62 +11,12 @@ namespace Flow.Launcher.ViewModel
 {
     public class ResultViewModel : BaseModel
     {
-        public class LazyAsync<T> : Lazy<ValueTask<T>>
-        {
-            private readonly T defaultValue;
-
-            private readonly Action _updateCallback;
-            public new T Value
-            {
-                get
-                {
-                    if (!IsValueCreated)
-                    {
-                        _ = Exercute(); // manually use callback strategy
-
-                        return defaultValue;
-                    }
-
-                    if (!base.Value.IsCompletedSuccessfully)
-                        return defaultValue;
-
-                    return base.Value.Result;
-
-                    // If none of the variables captured by the local function are captured by other lambdas,
-                    // the compiler can avoid heap allocations.
-                    async ValueTask Exercute()
-                    {
-                        await base.Value.ConfigureAwait(false);
-                        _updateCallback();
-                    }
-
-                }
-            }
-            public LazyAsync(Func<ValueTask<T>> factory, T defaultValue, Action updateCallback) : base(factory)
-            {
-                if (defaultValue != null)
-                {
-                    this.defaultValue = defaultValue;
-                }
-
-                _updateCallback = updateCallback;
-            }
-        }
-
         public ResultViewModel(Result result, Settings settings)
         {
             if (result != null)
             {
                 Result = result;
-
-                Image = new LazyAsync<ImageSource>(
-                            SetImage,
-                            ImageLoader.DefaultImage,
-                            () =>
-                                {
-                                    OnPropertyChanged(nameof(Image));
-                                });
-            } 
+            }
 
             Settings = settings;
         }
@@ -85,44 +35,55 @@ public ResultViewModel(Result result, Settings settings)
                                                 ? Result.SubTitle
                                                 : Result.SubTitleToolTip;
 
-        public LazyAsync<ImageSource> Image { get; set; }
+        private volatile bool ImageLoaded;
+
+        private ImageSource image = ImageLoader.DefaultImage;
 
-        private async ValueTask<ImageSource> SetImage()
+        public ImageSource Image
+        {
+            get
+            {
+                if (!ImageLoaded)
+                {
+                    ImageLoaded = true;
+                    _ = LoadImageAsync();
+                }
+                return image;
+            }
+            private set => image = value;
+        }
+        private async ValueTask LoadImageAsync()
         {
             var imagePath = Result.IcoPath;
             if (string.IsNullOrEmpty(imagePath) && Result.Icon != null)
             {
                 try
                 {
-                    return Result.Icon();
+                    image = Result.Icon();
+                    return;
                 }
                 catch (Exception e)
                 {
                     Log.Exception($"|ResultViewModel.Image|IcoPath is empty and exception when calling Icon() for result <{Result.Title}> of plugin <{Result.PluginDirectory}>", e);
-                    return ImageLoader.DefaultImage;
                 }
             }
 
             if (ImageLoader.CacheContainImage(imagePath))
+            {
                 // will get here either when icoPath has value\icon delegate is null\when had exception in delegate
-                return ImageLoader.Load(imagePath);
+                image = ImageLoader.Load(imagePath);
+                return;
+            }
 
-            return await Task.Run(() => ImageLoader.Load(imagePath));
+            // We need to modify the property not field here to trigger the OnPropertyChanged event
+            Image = await Task.Run(() => ImageLoader.Load(imagePath)).ConfigureAwait(false);
         }
 
         public Result Result { get; }
 
         public override bool Equals(object obj)
         {
-            var r = obj as ResultViewModel;
-            if (r != null)
-            {
-                return Result.Equals(r.Result);
-            }
-            else
-            {
-                return false;
-            }
+            return obj is ResultViewModel r && Result.Equals(r.Result);
         }
 
         public override int GetHashCode()