When trying to print only certain pages in a booklet, pages that should not be included are included. Here are some steps to illustrate
Open the attached sample file.
File -> Print
Under the Range and Scale section, enter 5-8 in the Pages field.
Under the Document Layout section, choose Booklet as the Model.
The print preview may be sufficient to see the results. I expected a single sheet booklet containing pages five through eight, the ones that say "Print" on them. Instead, pages one through four are also included.
I am reporting from Mac 10.14.5, Publisher 1.7.1 (also tried 1.7.2.422). Printing to Canon irADV 8585i, page size US Letter.
booklet_range_test.afpub