When icon typography is not filled out in the Mini cart icon settings, the SVG styles are not being applied on frontend as per video.
This is specifically if you have selected a custom SVG icon for the mini cart.
Unfortunately, I cannot reproduce the problem. Please send temporary login credentials and a link to this thread to help@bricksbuilder.io using the email address you used during the purchase, or make your site publicly available, so I can check the styles on the front end.