Bootstrap 3.4.0 with Zen cart V1.5.8 and PHP 7.4.33

I am testing upgrading to 1.5.8 and installed the latest Bootstrap. I noticed that any categories that have sub-categories always shows the define main page information. If the category does not have a sub-category then the define mane page does not appear. I am trying to eliminate the define main page showing when selecting the categories. I use Bootstrap 3.1.1 currently with 1.5.7d and do not have this issue. Just curious if this is a setting I am missing?

Switching to the classic template and I do not have this issue.

http://www.popupparts.com/Backup if you want to see it in action.

Thank you