How to reproduce:
1. Open the attached "1337742_Repro" project
2. Open the Scene "SampleScene"
3. In the Hierarchy select the "UI Builder" GameObject
4. In the Inspector press the "Build" button
5. In the Hierarchy select the created "Text Object" GameObject (child of the "Canvas")
6. In the Inspector enable the "Canvas" Component
7. Inspect the Game view

Expected results: All of the letters are rendered properly
Actual results: Q, W, O, and A letters are corrupted

Reproducible with: 2018.4.35f1, 2019.4.27f1, 2020.3.10f1, 2021.1.8f1, 2021.2.0a18

Notes:
- Only capital letters are corrupted, lower case letters are not
- In the "UIBuilder.cs" script setting 55th to "true" will not produce any artifacts