I was seeing something similar with desktop Safari (15.6.1) on MacOS. Resizing the browser window, and looks like (but not sure) that it just switches to anothe

I was seeing something similar with desktop Safari (15.6.1) on MacOS. Resizing the browser window, and looks like (but not sure) that it just switches to another breakpoint (their words) for a new viewport, and they didn't design a way to pass the page scroll position to the new view port so it just resets the page position. Their "all viewports" page also isn't visible on my browser if the window is too small as the titles on each viewport aren't visible.