Add readme entry

README.md

@@ -33,5 +33,6 @@ just disable them in the settings in the meantime.
 * Tools derived from `BrushTool` not firing *OnDequipped* events (https://github.com/Yellow-Dog-Man/Resonite-Issues/issues/723)
 * It not being possible to import multiple audio clips at once (https://github.com/Yellow-Dog-Man/Resonite-Issues/issues/737)
 * URLs to text files or Resonite Packages failing to import instead of appearing as a hyperlink (https://github.com/Yellow-Dog-Man/Resonite-Issues/issues/785)
+* References in multiple duplicated or transferred-between-worlds items breaking (https://github.com/Yellow-Dog-Man/Resonite-Issues/issues/984)
 * UserInspectors not listing existing users in the session for non-host users (https://github.com/Yellow-Dog-Man/Resonite-Issues/issues/1964)
 * Animators updating all associated fields every frame while enabled but not playing (https://github.com/Yellow-Dog-Man/Resonite-Issues/issues/3480)