Page titles don't change when copying and modifying their titles
Steps to reproduce:
create a space and enable Scroll Translations,
go to a page and choose Copy from the Page Tools,
choose a new location for pages,
select Include child pages option,
use the options provided to customize the page titles,
a user can change the titles with a prefix, replace a keyword or phrase in existing titles.
a user can't add a prefix, replace a keyword or phrase in existing titles, or both;
Confluence page title (seen in the URL) is changed according to the specified settings.
Confluence 6.13.7, 7.0.3