diff --git a/src/PackageUploader.UI/MainWindow.xaml.cs b/src/PackageUploader.UI/MainWindow.xaml.cs
index 67efd6b6..13bce687 100644
--- a/src/PackageUploader.UI/MainWindow.xaml.cs
+++ b/src/PackageUploader.UI/MainWindow.xaml.cs
@@ -42,6 +42,13 @@ public MainWindow(UserLoggedInProvider userLoggedInProvider, IAuthenticationServ
             // Set version display
             VersionText.Text = string.Format(UI.Resources.Strings.MainPage.VersionLabel, GetSimpleVersion());
 
+            // Set initial window size before Show() so it opens at the correct dimensions
+            if (_compactModeProvider.IsCompactMode)
+            {
+                Width = 600;
+                Height = 420;
+            }
+
             // Sync icons with initial state
             UpdateCompactModeIcon();
         }
diff --git a/src/PackageUploader.UI/Providers/CompactModeProvider.cs b/src/PackageUploader.UI/Providers/CompactModeProvider.cs
index bf712edc..4490dd2d 100644
--- a/src/PackageUploader.UI/Providers/CompactModeProvider.cs
+++ b/src/PackageUploader.UI/Providers/CompactModeProvider.cs
@@ -14,7 +14,6 @@ public class CompactModeProvider : INotifyPropertyChanged
 
     public CompactModeProvider()
     {
-        // Read initial state from the shared settings cache (loaded once at startup by BaseViewModel).
         var stored = ViewModel.BaseViewModel.GetExternalSetting(SettingsKey);
         _isCompactMode = bool.TryParse(stored, out var result) && result;
     }
@@ -27,8 +26,6 @@ public bool IsCompactMode
             if (_isCompactMode != value)
             {
                 _isCompactMode = value;
-                // Route through the shared in-memory cache so BaseViewModel.SaveSettings()
-                // never overwrites this value with a stale copy.
                 ViewModel.BaseViewModel.SetExternalSetting(SettingsKey, value.ToString());
                 OnPropertyChanged();
             }