How to reproduce:
1. Open the attached “IN-152978” scene
2. Open the scene titled "Open this Scene"
3. Enter Play mode
4. Observe the Game view
Actual result: First column keys are too wide, second column keys are too narrow, ignoring LayoutElement Preferred Width
Expected result: Both columns should be laid out evenly, matching their Preferred Width settings
Reproducible with: 6000.6.0a6, 6000.6.1f1, 6000.7.0a6
Not reproducible with: 6000.0.83f1, 6000.3.24f1, 6000.6.0a5
Reproducible on: macOS 26.5 (M1), Windows 10 (By reporter)
Not reproducible on: No other environments tested