Hi Team – thanks for your reply.
For any users looking for answers on this thread, I stopped using the shortcode altogether, used the default event page at my own desired slug (changed in Event Calendar Pro settings), and adding some custom HTML after it in the area provided again in Event Calendar display settings.
I got stuff on the page that needed to be there, I can use filter bar.
I also voted to request filter bar for shortcode use.
Cheers!