How to reproduce:
1. Open the user’s attached project
2. In the Project window open the “Window.uxml” file
3. Observe the view
Expected result: Top split view is divided horizontally and the bottom split view is divided vertically
Actual result: Both split views are divided vertically
Reproducible with: 1.0.0-preview.18 (2020.3.41f1), 1.0.0 (2021.3.13f1, 2022.1.0a14)
Not reproducible with: 1.0.0 (2022.1.0a15, 2022.1.22f1, 2022.2.0b14, 2023.1.0a17)
Reproduced on: macOS 12.4 (Intel)