Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/AssemblyResultPerSectionView.cs
===================================================================
diff -u -rc704dafc81a213131e51f78b19fee63c14a9a5a5 -r407e8e07eed3bf16bac838855a7fdfdfd39f22ac
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/AssemblyResultPerSectionView.cs	(.../AssemblyResultPerSectionView.cs)	(revision c704dafc81a213131e51f78b19fee63c14a9a5a5)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/AssemblyResultPerSectionView.cs	(.../AssemblyResultPerSectionView.cs)	(revision 407e8e07eed3bf16bac838855a7fdfdfd39f22ac)
@@ -50,6 +50,7 @@
     /// </summary>
     public partial class AssemblyResultPerSectionView : UserControl, IView
     {
+        private readonly Observer assessmentSectionObserver;
         private readonly Observer assessmentSectionResultObserver;
 
         /// <summary>
@@ -68,6 +69,10 @@
             AssessmentSection = assessmentSection;
             InitializeComponent();
 
+            assessmentSectionObserver = new Observer(EnableRefreshButton)
+            {
+                Observable = assessmentSection
+            };
             assessmentSectionResultObserver = new Observer(EnableRefreshButton)
             {
                 Observable = new AssessmentSectionResultObserver(assessmentSection)
@@ -92,11 +97,10 @@
 
         protected override void Dispose(bool disposing)
         {
-            dataGridViewControl.CellFormatting -= HandleCellStyling;
-
             if (disposing)
             {
                 components?.Dispose();
+                assessmentSectionObserver.Dispose();
                 assessmentSectionResultObserver.Dispose();
             }