TextField using USS style becomes broken when no DisplayStyle.* is called

How to reproduce:
1. Open the attached "1410902.zip" project
2. Open the "AI Designer" window (AI Designer -> Tree Editor)
3. Add a new Variable to the Variables list
4. Double-click on the name of the Variable to modify it

Expected result: The name of the Variable gets focused/selected
Actual result: The name of the Variable doesn't get focused/selected

Reproducible with: 2022.1.13f1, 2022.2.0b4, 2023.1.0a6
Couldn't test with: 2020.3.38f1, 2021.3.8f1 - Deprecation causes errors preventing reproduction (Package scripts do not work)

Reproduced on: macOS Monterey 12.0.1

Note:

• Package is used to show the issue visually that is happening in the Script
• Uncommenting lines 125-126 and 134-135, shows the expected result
• Different versions cause different issues:
• 2022.2.0b4, 2023.1.0a6: Once focused it becomes hard to break said focus of the TextField
• 2022.1.13f1: Once focused and attempting to un-focus, doesn't convert back from TextField to Label