Abnormal Termination and Minimap Graphics Bug

### Describe the bug

I updated my game to the lastest experimental, the graphics started breaking at random, which resolved itself once I moved again:

I tried to switch from Altica to Ultica to see if it was an issue with my tileset, and it crashed with a "MESSAGE: SIGABRT: Abnormal termination
Error creating SDL message box."

### Attach save file

[Duck Hill 4-trimmed.tar.gz](https://github.com/user-attachments/files/29309150/Duck.Hill.4-trimmed.tar.gz)

### Steps to reproduce

I loaded up the save again and tried to reproduce this, but couldn't. However, when I encountered the crash, I left the cabin through the bathroom door. and walked around the east side.

### Expected behavior

I expected that the game wouldn't crash, and that the graphics wouldn't break.

### Screenshots

_No response_

### Versions and configuration

- OS: Windows
- OS Version: 10.0.26200.8655 (25H2)
- Game Version: cdda-experimental-2026-06-24-0412-dirty+SDL3 [64-bit]
- Graphics Version: Tiles
- Game Language: System language []
- Mods loaded: [
Dark Days Ahead [dda],
Disable NPC Needs [no_npc_food],
Portal Storms Ignore NPCs [personal_portal_storms],
Tamable Wildlife [Tamable_Wildlife],
No Hope [no_hope],
Xedra Evolved [xedra_evolved],
Mind Over Matter [mindovermatter],
Bionic Professions [package_bionic_professions]
]

### Additional context

[crash.log](https://github.com/user-attachments/files/29309235/crash.log)

[debug.log](https://github.com/user-attachments/files/29309291/debug.log)

I suspect that this is related to SDL3, but that's guesswork.

Start by loading the attached Duck Hill 4-trimmed.tar.gz save and reviewing crash.log and debug.log for the SDL3 message-box failure and minimap graphics symptoms. Try to reproduce the crash and visual corruption around the reported cabin bathroom exit and east side; done means both issues are reliably explained and fixed without introducing new graphics or termination failures.

Written by the indexing model from the issue text.