Changes for size classes not visible on storyboard (StoreSearch)

I switched my storyboard view to iPad Pro (9.7") and made adjustments for Regular/Regular size class. These changes show up in the simulator after building and running the app, but I don’t see the changes reflected on my storyboard. Did I miss a step to show these changes while editing?

As far as I know, these changes should show up in the storyboard indeed, depending on the device type you’ve chosen in the “View as” panel.

Do they show up when you open the Preview pane in the Assistant editor?

Yes, the changes do show show up in the preview view. For this particular project it’s not such a big deal, but I can image for more complicated designs it will be challenging.