Fixed lists after code blocks disappearing without annotations

src/assets/javascripts/components/content/code/annotation/list/index.ts

@@ -21,6 +21,7 @@
  */
 
 import {
+  EMPTY,
   Observable,
   Subject,
   defer,
@@ -118,6 +119,10 @@ export function mountAnnotationList(
     marker.replaceWith(annotations.get(+id)!)
   }
 
+  /* Keep list if there are no annotations to render */
+  if (annotations.size === 0)
+    return EMPTY
+
   /* Create and return component */
   return defer(() => {
     const done$ = new Subject<void>()