diff --git a/UnitTests/Views/OverlappedTests.cs b/UnitTests/Views/OverlappedTests.cs
index 621c681ff..b4437b89d 100644
--- a/UnitTests/Views/OverlappedTests.cs
+++ b/UnitTests/Views/OverlappedTests.cs
@@ -1,4 +1,5 @@
-using Xunit.Abstractions;
+using System.Threading;
+using Xunit.Abstractions;
 
 namespace Terminal.Gui.ViewsTests;
 
@@ -100,6 +101,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -182,6 +184,7 @@ public class OverlappedTests
         Application.Run (top1);
 
         Assert.Null (Application.OverlappedChildren);
+        top1.Dispose ();
     }
 
     [Fact]
@@ -237,6 +240,7 @@ public class OverlappedTests
                                  };
 
         Application.Run (overlapped);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -338,6 +342,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -429,6 +434,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -514,6 +520,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -609,6 +616,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -625,6 +633,7 @@ public class OverlappedTests
                             };
 
         Application.Run (overlapped);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -703,6 +712,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -782,6 +792,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]
@@ -860,6 +871,7 @@ public class OverlappedTests
         Assert.Empty (Application.OverlappedChildren);
         Assert.NotNull (Application.OverlappedTop);
         Assert.NotNull (Application.Top);
+        overlapped.Dispose ();
     }
 
     [Fact]