Volume Profile overrides added by the AI Assistant disappear when entering Play Mode

How to reproduce:

1. Create a new project using the “Universal 3D” template
2. Install the Assistant package
3. Ensure that the Unity project is linked to a cloud project
4. In the Assistant window, enter the following prompt: “Add a Vignette effect to the current scene by creating a new Volume Profile.”
5. Save the changes made in the Scene
6. In the Hierarchy, select the created or modified Volume GameObject
7. Enter and exit Play Mode
8. Observe the Scene View and the Inspector

Actual result: The vignette disappears from the Scene View and is no longer shown in the Inspector
Expected result: The vignette remains in the Scene View and in the Inspector

Reproducible with: 1.6.0-pre.1 (6000.4.2f1), 2.4.0-pre.1 (6000.4.2f1)
Could not test with: 2.4.0-pre.1 (6000.6.0a2) ([Internal link])

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Notes:

• Other post-processing overrides are affected and can be added to the prompt
• The added overrides also disappear when the Editor is restarted
• Triggering a domain reload by creating or reimporting a script does not remove the added overrides