diff --git a/src/Riverside.Toolkit/Controls/TitleBar/TitleBarEx.WndProc.cs b/src/Riverside.Toolkit/Controls/TitleBar/TitleBarEx.WndProc.cs
index b018400..acd505e 100644
--- a/src/Riverside.Toolkit/Controls/TitleBar/TitleBarEx.WndProc.cs
+++ b/src/Riverside.Toolkit/Controls/TitleBar/TitleBarEx.WndProc.cs
@@ -112,6 +112,8 @@ private async void WndProc(object? sender, WindowMessageEventArgs args)
                             // Extend drag area
                             buttonDownHeight = 25;
 
+                            InvokeChecks();
+
                             // Minimize
                             if (IsInMinButton() && CurrentCaption is SelectedCaptionButton.Minimize or SelectedCaptionButton.None)
                             {
@@ -152,6 +154,8 @@ private async void WndProc(object? sender, WindowMessageEventArgs args)
                             // Restore drag area
                             buttonDownHeight = 0;
 
+                            InvokeChecks();
+
                             // Minimize
                             if (IsInMinButton() && CurrentCaption != SelectedCaptionButton.Minimize) CurrentCaption = SelectedCaptionButton.None;
                             if (IsInMinButton() && CurrentCaption == SelectedCaptionButton.Minimize && IsMinimizable)