Found a fix for the Scroll/Modal problems I was having with using Bootstrap with Layout Builder. In Bootstrap issue https://www.drupal.org/project/bootstrap/issues/2821008 #23 it tells us to Uncheck the 'Enable Bootstrap Modals' box. in the theme.
Over the last couple of weeks I have started playing with Drupal 8. So far it's been a pleasant experience (surprisingly) though originally I had issues with getting it installed. I tried using drush dl but it would not work (when used it would only download the latest version of Drupal 7). Turns out Drush 6 (the version I was currently at) does not support Drupal 8.