diff --git a/docs/src/demos/Experiments/CollaborationAnnotation/extension/AnnotationState.ts b/docs/src/demos/Experiments/CollaborationAnnotation/extension/AnnotationState.ts
index 88dfc416..d458e095 100644
--- a/docs/src/demos/Experiments/CollaborationAnnotation/extension/AnnotationState.ts
+++ b/docs/src/demos/Experiments/CollaborationAnnotation/extension/AnnotationState.ts
@@ -101,7 +101,11 @@ export class AnnotationState {
         }
 
         return decorations.push(
-          Decoration.inline(from, to, HTMLAttributes, { id, data: annotation.data }),
+          Decoration.inline(from, to, HTMLAttributes, {
+            id,
+            data: annotation.data,
+            inclusiveEnd: true,
+          }),
         )
       })