Characters are on top of each other when text has a “Thai” font

How to reproduce:
1. Open the user’s attached “Thai.zip” project
2. Open the Game window and observe the text

Expected result: Symbols above the third character are not on top of each other
Actual result: Symbols above the third character are on top of each other

Reproducible with: 3.0.6 (2020.3.48f1), 3.2.0-pre.4 (2020.3.48f1, 2021.3.25f1, 2022.2.20f1, 2023.1.0b17, 2023.2.0a15)
Could not test with: 4.0.0-pre.2 (Errors after updating TextMeshPro package)

Reproduced on: macOS 13.2.1 (Intel)

Note: Not reproducible with Legacy Text