Hello,
so in the Bricks editor there is on the left the pages selection window and on the right corner the template selector window. In none of those windows is the template to be found for the other language(s). One needs to go the WP dashboard to select it. Since the logic with Polylang is to have seperate pages/post per each languages, switching in between is really common. It was a great help to see Elementor implementing this a long time ago and would be a great help for this tool too.