Don’t prompt to save read-only referenced documents (discard changes)

Hi,

Please correct me if I’m wrong:
With this option enabled, if I open a read-only part file from within the main assembly, make a few changes to that read-only(Not check out) component, and then close it—should I expect to see the "Save" prompt shown below?

Can anyone provide more details on how this option behaves in such scenarios?
Using SolidWorks 2025 SP3