[Experimental EXE] CH8 Crash when pressing "Read again" button at Bern's game

## Bug Information

**Describe the bug**: During Bern's game, the game crashes when pressing "Read again" for a user

**To reproduce**: Click "Read again" during bern's game

**Expected behavior**: The game should show 6 buttons for you to choose which subsection to start from

## Install Information

**The game**: You should only report Umineko Answer issues in this repository (use [the question arc repo](https://github.com/07th-mod/umineko-question/issues) for the question arcs

**The mod variant**: ADV

**I installed the patch**: ???

**I bought the game at**: ???

**Mod Install Date**: ???

I couldn't reproduce the crash on my own computer, but there does look to be some funky stuff to do with the buttons during bern's game. I feel like there may have been a report related to this in the past, but it seems very infrequent (this user also has more crashes than other users)

Il problema riguarda un crash nel gioco di Bern quando si preme 'Read again'. Esamina il codice del gioco per la sezione del gioco di Bern, in particolare la gestione dei pulsanti e la gestione dello stato intorno alla funzionalità 'Read again'. Cerca segnalazioni o commit esistenti relativi a questo crash. Riproduci il problema se possibile, quindi esegui il debug per identificare la causa del crash e il 'funky stuff' con i pulsanti.

Scritto dal modello di indicizzazione a partire dal testo della issue.