How to reproduce:
1. Open the attached “IN-131687_Setup Guide In-Editor Tutorial.zip” with the Japanese language module installed
2. Open the Preferences (Unity → Settings…)
3. In the “Preferences” window, go to the “Languages” tab
4. Change the Editor language to “日本語 (Experimental)”
5. Observe the crash
Actual result: The Unity Editor crashes
Expected result: Unity Editor switches to Japanese language
Reproducible with: 6000.3.6f1, 6000.4.0f1, 6000.5.0b2
Reproducible on: macOS 15.3.2 (24D81) (M1 Max)
Not reproducible on: NVIDIA GeForce RTX 3070 Laptop GPU
Note: The issue reproduces very inconsistently, occurring only on the first project opening