DELTARUNE (1671210) crashes with Proton

**Game information**
DELTARUNE (1671210)

**Distribution name and version where applicable**
Pop!_OS 22.04 LTS

**Flatpak info**
Flatpak 1.14.6
default, host gl-drivers

**Problem description**
The game crashes in the opening of Chapter 1 and the name entry screen when starting a new save from Chapter 2 when using Proton. I think it has to do with the amount of text loaded in.

**Does this issue reproduce with native Steam**
No.

No source file, test, or entry point is identified. Start by reproducing the crash in DELTARUNE on Pop!_OS 22.04 using the Flatpak Steam installation and Proton, checking both the Chapter 1 opening and the Chapter 2 new-save name entry screen. Done means identifying the relevant failure and confirming that the affected scenarios no longer crash.

Written by the indexing model from the issue text.