Bootstrap Component - Modal: locks view - in bs5 version bs4 is still used

[FritzHerbers]

The large modal opens the modal and the background is greyed out, however also the modal and the close button is greyed out. The button can not be clicked.

• Angular 13 and Bootstrap 5

Possible cause:

• SB-Admin-BS4-Angular-8 sources it own bootstrap version, which is still on Bootstrap 4
• src\styles\bootstrap\bootstrap.scss: Bootstrap v4.0.0-beta.3

ng-bootstrap/ng-bootstrap#4141

In generell:
The source is not migrated from bs4 to bs5: https://getbootstrap.com/docs/5.2/migration/
E.g. changes of utilities, e.g. Renamed .border-left and .border-right to .border-start and .border-end