Act 3 - Black Chambers Altar not interactable after defeating boss

Bug Report Reference Number: 3758183134

Description:
After defeating the Black Chambers boss in Act 3, I still have the Gold Idol, Exceptional Idol, Glorious Idol, and Sacrificial Heart in my inventory. The Altar of Sacrifice is visible but not interactable. I cannot drop, stash, or vendor the items. Quest progression has continued into Act 4 (Kingsmarch), but the items remain stuck in my inventory.

Steps to Reproduce:
1. Enter Black Chambers.
2. Defeat boss before interacting with the altar.
3. Attempt to use altar afterward — no prompt appears.
4. Attempt to drop/stash items — not allowed.