diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 2b8b9f53eb..e4d2edb280 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -75,6 +75,7 @@ As a result, the following maven modules have been deleted: `sirius-web-sample-a
 - https://github.com/eclipse-sirius/sirius-web/issues/3824[#3824] [core] Fix representation migration participant execution which was failing when there were many representation migration participant to apply.
 - https://github.com/eclipse-sirius/sirius-web/issues/3851[#3851] [trees] Fix an issue where the tree filters menu items were not displayed anymore after a click on the filters menu.
 - https://github.com/eclipse-sirius/sirius-web/issues/3849[#3849] [form] Fix the tree representation in form support the display of the same referenced element many times in the tree.
+- https://github.com/eclipse-sirius/sirius-web/issues/3878[#3878] [diagram] Unmount ReactFlowProvider after layout
 
 === New Features
 
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/layout/layout.tsx b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/layout/layout.tsx
index 5dcb6956cf..e5b7cb0482 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/layout/layout.tsx
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/layout/layout.tsx
@@ -204,6 +204,7 @@ export const prepareLayoutArea = (
 
 export const cleanLayoutArea = (container: HTMLDivElement) => {
   if (container?.parentNode) {
+    ReactDOM.unmountComponentAtNode(container);
     container.parentNode.removeChild(container);
   }
 };