diff --git a/addons/website/static/src/components/wysiwyg_adapter/wysiwyg_adapter.js b/addons/website/static/src/components/wysiwyg_adapter/wysiwyg_adapter.js
index 0accc487c96..9e19f1ccb48 100644
--- a/addons/website/static/src/components/wysiwyg_adapter/wysiwyg_adapter.js
+++ b/addons/website/static/src/components/wysiwyg_adapter/wysiwyg_adapter.js
@@ -427,6 +427,16 @@ export class WysiwygAdapterComponent extends ComponentAdapter {
      */
     _websiteRootEvent(type, eventData = {}) {
         const websiteRootInstance = this.websiteService.websiteRootInstance;
+        // If the websiteRootInstance is gone but an event still tries to reach it
+        // prevent a traceback by denying the event.
+        // TODO we should investigate if this is normal the websiteRootInstance
+        // is being accessed while being dead following a wysiwyg adapter event.
+        if (!websiteRootInstance) {
+            if (eventData.onFailure) {
+                return eventData.onFailure();
+            }
+            return false;
+        }
         return websiteRootInstance.trigger_up(type, {...eventData});
     }
     _preventDefault(e) {