The question is on the borderline between Braille Formats and the UEB Rules. So, because “lists” are mentioned; we will say this is Braille Formats. Because several items in a list are completely italicized, your friend is correct about the application of UEB 9.9. Look at the following example. Note that the first title below contains text that is not part of the title.
[open] The First President,[Close] co-written by Dr. J.E. Abrams
[open] Executive Orders
[open] 1600 Pennsylvania Avenue
[open] The Election of 1800 [Close]
Do you have an example to share? Is there a particular list of titles that is giving you trouble?