Reproduction steps:
1. Open the attached project “ParseEscape”
2. Open the “Assets/Scenes/SampleScene” Scene
3. Enter the Play Mode
4. Select the TextField in the Game view
5. Type “\\1” in the TextField

Expected result: The TextField shows “\\1”
Actual result: The TextField shows “\1\”

Reproducible with: 2022.2.0a14, 2022.3.5f1
Not reproducible with: 2021.3.30f1, 2022.2.0a13, 2023.1.14f1, 2023.2.0b10, 2023.3.0a6
Fixed in: 2022.3.6f1

Reproducible on: macOS 13.5.2 (Intel)
Not reproducible on: No other environment tested

Note: The behavior on 2022.2.0a13 didn’t match the fixed version behavior, and it only hides the second '\' character