For users whose saves were corrupted during the bug window (e.g., the game crashed as the portal was loading), the developers have introduced a hidden "Repair Station" next to the entrance fountain. Interact with it, select "Re-sync Realm Data," and the game will force-reset the gallery instance.
Prior to the fix, players frequently reported a "black screen" bug or missing thumbnails when trying to revisit unlocked CGs (Computer Graphics). The update successfully re-links the game’s save flags to the gallery assets.