I did an update today to the latest version of the T4 framework and the BS5 template.
I am finding now when I go into the framework style edit screen where you edit layouts, CSS and Navigation I no longer get an edit button on any of the categories and everything is greyed out.
This of course means that I can't do anything to edit the structure of the site any more.
I had to downgrade back to to the previous version of both the template and plugin to get the edit button to display again.