diff --git a/Plain Craft Launcher 2/Application.xaml b/Plain Craft Launcher 2/Application.xaml
index 8649890..07bff96 100644
--- a/Plain Craft Launcher 2/Application.xaml	
+++ b/Plain Craft Launcher 2/Application.xaml	
@@ -132,6 +132,37 @@
                 <Setter Property="FontFamily" Value="Resources/#PCL English, Microsoft YaHei UI" />
             </Style>
 
+            <!-- ToolTip -->
+            <Style TargetType="ToolTip">
+                <EventSetter Event="Opened" Handler="OnTooltipOpened" />
+                <EventSetter Event="Closed" Handler="OnTooltipClosed" />
+                <Setter Property="Template">
+                    <Setter.Value>
+                        <ControlTemplate>
+                            <Border BorderBrush="{DynamicResource ColorBrush1}" BorderThickness="1.5" CornerRadius="4" MaxWidth="500" Background="#E5FFFFFF" Margin="0,0,4,4" SnapsToDevicePixels="True">
+                                <Border.Effect>
+                                    <DropShadowEffect Opacity="0.3" BlurRadius="4" ShadowDepth="2" Color="{DynamicResource ColorObject1}" />
+                                </Border.Effect>
+                                <TextBlock Text="{TemplateBinding ContentControl.Content}" TextWrapping="Wrap" Foreground="{DynamicResource ColorBrush1}" Margin="7,5" FontSize="12"/>
+                            </Border>
+                        </ControlTemplate>
+                    </Setter.Value>
+                </Setter>
+            </Style>
+            <Style x:Key="ExtendTextToolTip" TargetType="ToolTip">
+                <EventSetter Event="Opened" Handler="OnTooltipOpened" />
+                <EventSetter Event="Closed" Handler="OnTooltipClosed" />
+                <Setter Property="Template">
+                    <Setter.Value>
+                        <ControlTemplate>
+                            <Border BorderBrush="{DynamicResource ColorBrush1}" BorderThickness="1" CornerRadius="3" Background="White" Margin="0,0,4,4" SnapsToDevicePixels="True">
+                                <TextBlock Text="{TemplateBinding ContentControl.Content}" TextWrapping="Wrap" Foreground="{DynamicResource ColorBrush1}" Margin="7,5" FontSize="12"/>
+                            </Border>
+                        </ControlTemplate>
+                    </Setter.Value>
+                </Setter>
+            </Style>
+            
             <!-- ScrollViewer -->
             <Style x:Key="MyThumb" TargetType="Thumb">
                 <Setter Property="Stylus.IsPressAndHoldEnabled" Value="false"/>
diff --git a/Plain Craft Launcher 2/Application.xaml.vb b/Plain Craft Launcher 2/Application.xaml.vb
index 04de214..dc72555 100644
--- a/Plain Craft Launcher 2/Application.xaml.vb	
+++ b/Plain Craft Launcher 2/Application.xaml.vb	
@@ -290,11 +290,11 @@ RetryCacheCheck:
         End Select
     End Sub
 
-    Public Shared ShowingTooltips As New List(Of Border)
-    Private Sub TooltipLoaded(sender As Border, e As EventArgs)
+    Public Shared ShowingTooltips As New List(Of ToolTip)
+    Private Sub OnTooltipOpened(sender As ToolTip, e As RoutedEventArgs)
         ShowingTooltips.Add(sender)
     End Sub
-    Private Sub TooltipUnloaded(sender As Border, e As RoutedEventArgs)
+    Private Sub OnTooltipClosed(sender As ToolTip, e As RoutedEventArgs)
         ShowingTooltips.Remove(sender)
     End Sub
 
diff --git a/Plain Craft Launcher 2/Controls/MyScrollViewer.vb b/Plain Craft Launcher 2/Controls/MyScrollViewer.vb
index 5ed2b5e..8ddce1e 100644
--- a/Plain Craft Launcher 2/Controls/MyScrollViewer.vb	
+++ b/Plain Craft Launcher 2/Controls/MyScrollViewer.vb	
@@ -19,9 +19,8 @@ Public Class MyScrollViewer
         e.Handled = True
         PerformVerticalOffsetDelta(-e.Delta)
         '关闭 Tooltip (#2552)
-        For Each TooltipBorder In Application.ShowingTooltips
-            AniStart(AaOpacity(TooltipBorder, -1, 100), $"Hide Tooltip {GetUuid()}")
-        Next
+        '通过 IsOpen 关闭 Tooltip 而不是降低 Border 不透明度 (#5744)
+        Application.ShowingTooltips.ForEach(Sub(tooltip) tooltip.IsOpen = False)
     End Sub
     Public Sub PerformVerticalOffsetDelta(Delta As Double)
         AniStart(