Reproduction steps:

# Create a new Unity project
# Open Window → Package Manager window
# Inspect the Package Manager window

Expected result: The Package Manager window does not contain any white squares on the text
Actual result: All text is replaced with white squares in the Package Manager window

Reproducible with: 2020.3.41f1
Not reproducible with: 2021.3.13f1, 2022.1.22f1, 2022.2.0b15, 2023.1.0a18

Reproducible on: macOS 13.0
Not reproducible on: macOS 12.6