Please, can you update the gap property in CSS editor?
Now there are only those related to css grid, missing the “gap” for flexbox and also for the grid (short version).
I know BS has the gap classes, but it might be useful to have gap property available also in the css editor to better customize the style.
You start typing gap in the Class Names field in the attribute panel and you will get suggestions of all the different gap utilities. Bootstrap css grid isn’t activated by default, you must activate it first and have the compiled bootstrap.css as a theme in BSS. You will not find a g-column in the component panel.
You can use a css grid by writing a css class here is an example
BTW your link goes to Bootstrap 5.3 BSS using Bootstrap 5.2.3 at the moment