Still no update to the Bootstrap Builder to make it more consistent with official release?

Seen the new course on B 4?

B 4 has been described as "a major rewrite of the library. Not only are there a lot of changes under the hood, but there are also several new concepts you’ll need to wrap your head around. " so CC BB might be good for those compelled to be backward -- compatible with earlier versions of the browsers, but ....

To get you "up to speed" with B 4 there's also a newly available, 10-part course:
The course takes you through everything you need to know in order to create full-blown websites with Bootstrap 4. Whether you've been working with Bootstrap before, or are completely new to the framework, this course will get you up to speed with the newest version.

What you'll learn:
The responsive grid system
Navbars
Modals
Forms
List groups
Tables
Alerts
So claim your free spot in this course today!
https://scrimba.com/g/gbootstrap4

NB: the course is "INTERACTIVE" and not just a series of PDFs;
some of which, as we know, are very poorly written sometimes ;-D