The bookmarks page has “Updated” and “Activity” columns. It would be good to be able to click on those headings to display the bookmarks in chronological order.
While I tend to agree with this, as a work-around you can use https://meta.discourse.org/bookmarks and add a link in a custom navigation menu section or add bookmarks to the admin-settings top menu setting so there is a bookmarks filter link in the nav bar (which goes to the above /bookmarks link).
If you click the actual bookmark icon at the beginning of the title, it should go to your bookmarked post. Although, now that I think about it, that link may only be bookmarked topic posts, not all topics with a bookmarked posts