“UI Stage - Unsaved Changes Detected” popup appears after the Save Scene popup causing unsaved changes lost/discarded when closing the Editor and clicking the Cancel button

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Create a new Visual Element (UI Toolkit > Standard Elements > Visual Element)
3. Click "Continue"
4. Exit the Editor
5. Click "Save"
6. Click "Cancel"
7. Observe the Editor

Actual results: The Editor is closed with unsaved changes

Expected results: The Editor is not closed because the "Cancel" button was clicked

Reproducible with versions: 6000.6.0b4, 6000.7.0a2

Can’t test with versions: 6000.0.79f1, 6000.3.20f1, 6000.5.4f1 (due to feature not existing)

Tested on (OS): MacOS SIlicon Tahoe 26.5.1

Notes:

• Does not reproduce with UI Builder since the UI Builder's unsaved changes popup appears before the Save Scene popup