Dynamic Page Size

I can't recall exactly when the change occurred, but it would be nice to have the 'dynamic' template again. There use to be an option where the page size type was 'dynamic' and it has been replaced with 'custom'. Right now, I am basically opening old power bi files, deleting charts and data sources, just so I can keep the dynamic feature. This would allow the page size not to default to only one size. When you resize the web browser or dashboard, it will adjust accordingly.