How to reproduce:
1. Open project “EditorWindowHandlesTest.zip”
2. Open Menu > Window > Handles tester
3. Move handles and observe the result
Expected result: Handles can be moved when the cursor is on them
Actual result: Handles can be moved when the cursor has an offset to the top right
Reproducible with: 2021.2.0a17, 2021.3.7f1, 2021.1.11f1, 2022.2.0b3, 2023.1.0a4
Not reproducible with: 2020.3.37f1, 2021.2.0a16
Reproduced on: macOS 12.4 (Intel)
Note: Thin part of a handle is not registering the cursor