Merge branch '250223FluentTest2' of https://github.com/onesounds/Flow.Launcher into 250223FluentTest2

Author: onesounds

Flow.Launcher/MainWindow.xaml

@@ -20,7 +20,6 @@
     Closing="OnClosing"
     Deactivated="OnDeactivated"
     Icon="Images/app.png"
-    SourceInitialized="OnSourceInitialized"
     Initialized="OnInitialized"
     Left="{Binding Settings.WindowLeft, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
     Loaded="OnLoaded"
@@ -31,6 +30,7 @@
     ResizeMode="CanResize"
     ShowInTaskbar="False"
     SizeToContent="Height"
+    SourceInitialized="OnSourceInitialized"
     Topmost="True"
     Visibility="{Binding MainWindowVisibility, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
     WindowStartupLocation="Manual"
@@ -377,7 +377,7 @@
                         Style="{DynamicResource SeparatorStyle}" />
                 </ContentControl>
             </Grid>
-          
+
             <Border Style="{DynamicResource WindowRadius}">
                 <Border.Clip>
                     <MultiBinding Converter="{StaticResource BorderClipConverter}">

Flow.Launcher/MainWindow.xaml.cs

@@ -38,9 +38,7 @@ namespace Flow.Launcher
     public partial class MainWindow
     {
         #region Private Fields
-          
-        private readonly Storyboard _progressBarStoryboard = new Storyboard();
-        private bool isProgressBarStoryboardPaused;
+
         private readonly Settings _settings;
         private NotifyIcon _notifyIcon;
         private readonly ContextMenu contextMenu = new();
@@ -185,19 +183,19 @@ private async void OnLoaded(object sender, RoutedEventArgs _)
             PreviewMouseMove += MainPreviewMouseMove;
             CheckFirstLaunch();
             HideStartup();
-            // show notify icon when flowlauncher is hidden
+            // Show notify icon when flowlauncher is hidden
             InitializeNotifyIcon();
             InitializeColorScheme();
             WindowsInteropHelper.DisableControlBox(this);
             InitProgressbarAnimation();
+            // Move the window out of screen because setting backdrop will cause flicker with a rectangle
+            Left = Top = -10000;
+            await ThemeManager.Instance.RefreshFrameAsync();
             // Initialize call twice to work around multi-display alignment issue- https://github.com/Flow-Launcher/Flow.Launcher/issues/2910
             InitializePosition();
             InitializePosition();
-            // Refresh frame after position is intialized
-            await ThemeManager.Instance.RefreshFrameAsync();
             PreviewReset();
-            // since the default main window visibility is visible
-            // so we need set focus during startup
+            // Since the default main window visibility is visible, so we need set focus during startup
             QueryTextBox.Focus();
 
             _viewModel.PropertyChanged += (o, e) =>