Empty FAQ sections are displayed after a tutorial is closed using the Previous button with the Need Help tab open

Steps to reproduce:

1. Open the attached project
2. Open any Tutorial from the Tutorials window
3. Expand the Need Help? foldout
4. Observe that only the Tutorial FAQ section is present
5. Close the Tutorial using the "Previous" button (Keep the Need Help? foldout expanded)
6. Re-open any Tutorial
7. Observe the Tutorial window

Actual results: Tutorial is opened with Need Help? section already expanded. Additional FAQ sections are shown - Unit and Step. No FAQ questions are present by default. Trying to select Tutorial FAQ as the first option will not display any FAQ content; Unit or Step must be selected first, even though they are empty

Expected results: Tutorial opens without Need Help? section expanded (Behaviour prior to regression). No empty FAQ pages are shown after reopening

Reproducible with versions: 6.0.0, 6.0.7(6000.5.4f1, 7000.0.0a8)

Not reproducible with versions: 5.0.4(6000.5.4f1)

Tested on (OS): macOS 26.6.2

Notes:

• Does not reproduce if the "Close" button is used during step 5