You can go to your theme settings and enable a new option to adjust the layout of the topic page.
One thing that always bothered me in Persona—and to some extent in Harmony—was how far down the main post appeared on the page. This new option helps alleviate that issue. By default, the post bar remains at the top, and the mobile view remains unchanged.
Here’s a screenshot:
Very nice! I agree, it's better to have the main post start higher like this.