What the developers reported fixing
The cuju ball
A questline issue prevented players from handing the ball to the NPC.
The missing shadow
A character’s shadow could fail to respawn.
If your quest is still stuck
Use this reporting checklist to distinguish the documented problem from a different objective:
The checklist is our troubleshooting advice. A published fix does not prove that every player’s save is now clear, and this page is not a complete temple walkthrough.
Source: Official Version 2.1 patch notes. The page was published September 7; the relevant entries are dated September 5.