Reproduction steps:
1. Open the attached “IN-92054” project
2. Open the “Scenes/utils” Scene and open the “Scenes/ui_menu_001” Scene Additive
3. Select the “Subtitle” GameObject in the Hierarchy window
4. Enter the Play Mode
5. Observe the “Graph” value under “Script Machine” component in the Inspector window

Expected result: Graph value remains the same
Actual result: Graph value gets unset

Reproducible with: 1.7.1, 1.8.0, 1.9.5 (2022.3.57f1, 6000.0.36f1, 6000.1.0b5, 6000.2.0a2)

Reproducible on: Windows 10, Windows 11 (user)
Not reproducible on: No other environments tested