Reproduction steps:
1. Open the attached project “UITKProject”
2. Double-click on the “Assets/mainui.uxml” file to open the UI Builder window
3. In the UI Builder Hierarchy window find the “title333” object and rename it to any other name
4. Press Ctrl + S or Cmd + S to save the change
5. Focus on another program and then refocus on Unity editor
Expected result: Unity starts recompilation after step 4
Actual result: Unity starts recompilation after being refocused
Reproducible with: 2021.3.21f1, 2022.2.11f1, 2023.1.0b8, 2023.2.0a6
Couldn’t test with: 2020.3.46f1 - Errors in user scripts
Reproducible on: macOS 13.1 (Intel), Windows 10