diff --git a/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs b/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs
index 26ef25e..e482296 100644
--- a/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs
+++ b/FasdDesktopUi/Pages/TicketCompletion/TicketCompletion.xaml.cs
@@ -18,8 +18,10 @@ namespace FasdDesktopUi.Pages.TicketCompletion
 {
     public partial class TicketCompletion : Window, IBlurInvoker, INotifyPropertyChanged
     {
+        private const double MinWindowHeightDip = 220d;
         private const double WindowWorkingAreaMarginDip = 12d;
         private const double DialogNonContentReserveDip = 180d;
+        private bool isUpdatingDialogBounds;
         private bool isCanceled = false;
 
         private bool _WaitForClosing = false;
@@ -53,6 +55,8 @@ namespace FasdDesktopUi.Pages.TicketCompletion
 
             cFocusInvoker.GotFocus += ElementGotFocus;
             cFocusInvoker.LostFocus += ElementLostFocus;
+            SizeChanged += TicketCompletion_SizeChanged;
+            Loaded += TicketCompletion_Loaded;
         }
 
         protected override void OnSourceInitialized(EventArgs e)
@@ -66,6 +70,10 @@ namespace FasdDesktopUi.Pages.TicketCompletion
             base.OnLocationChanged(e);
             UpdateDialogMaxHeightToScreen();
         }
+
+        private void TicketCompletion_Loaded(object sender, RoutedEventArgs e) => UpdateDialogMaxHeightToScreen();
+
+        private void TicketCompletion_SizeChanged(object sender, SizeChangedEventArgs e) => UpdateDialogMaxHeightToScreen();
 
         #region ClosingBusy
 
@@ -145,6 +153,10 @@ namespace FasdDesktopUi.Pages.TicketCompletion
 
         private void UpdateDialogMaxHeightToScreen()
         {
+            if (isUpdatingDialogBounds)
+                return;
+
+            isUpdatingDialogBounds = true;
             try
             {
                 WinForms.Screen screen = null;
@@ -164,15 +176,45 @@ namespace FasdDesktopUi.Pages.TicketCompletion
                 screen = screen ?? WinForms.Screen.PrimaryScreen;
                 var workingArea = screen?.WorkingArea ?? WinForms.Screen.PrimaryScreen.WorkingArea;
                 var dpiScaleY = VisualTreeHelper.GetDpi(this).DpiScaleY;
-                var maxHeightDip = (workingArea.Height / Math.Max(0.1, dpiScaleY)) - WindowWorkingAreaMarginDip;
+                var safeDpiScaleY = Math.Max(0.1, dpiScaleY);
+                var workingAreaTopDip = workingArea.Top / safeDpiScaleY;
+                var workingAreaBottomDip = workingArea.Bottom / safeDpiScaleY;
+                var workingAreaHeightDip = workingArea.Height / safeDpiScaleY;
+                var availableWindowHeightDip = workingAreaHeightDip - (WindowWorkingAreaMarginDip * 2);
 
-                MaxHeight = Math.Max(220, maxHeightDip);
-                CloseCaseDialogUc?.SetDialogContentMaxHeight(MaxHeight - DialogNonContentReserveDip);
+                MaxHeight = Math.Max(MinWindowHeightDip, availableWindowHeightDip);
+
+                if (!double.IsNaN(Top))
+                {
+                    var minTop = workingAreaTopDip + WindowWorkingAreaMarginDip;
+                    var maxBottom = workingAreaBottomDip - WindowWorkingAreaMarginDip;
+
+                    if (Top < minTop)
+                        Top = minTop;
+
+                    var currentBottom = Top + ActualHeight;
+                    if (currentBottom > maxBottom)
+                        Top = Math.Max(minTop, maxBottom - ActualHeight);
+                }
+
+                double nonDialogReserve = DialogNonContentReserveDip;
+                if (CloseCaseDialogUc != null && CloseCaseDialogUc.IsLoaded)
+                {
+                    var estimatedReserve = ActualHeight - CloseCaseDialogUc.ActualHeight;
+                    if (estimatedReserve > 0)
+                        nonDialogReserve = Math.Max(nonDialogReserve, estimatedReserve + WindowWorkingAreaMarginDip);
+                }
+
+                CloseCaseDialogUc?.SetDialogContentMaxHeight(MaxHeight - nonDialogReserve);
             }
             catch (Exception ex)
             {
                 LogException(ex);
             }
+            finally
+            {
+                isUpdatingDialogBounds = false;
+            }
         }
 
         #region Internal Focus Events