ArcGIS Dashboards introduced new mobile layouts this past summer that allows authors to configure two versions of a single dashboard item, which would then dynamically swap between desktop and mobile layouts based on the screen size readers were viewing it with.
I was hoping to take advantage of this within StoryMaps while using the embed block, so that if you viewed the StoryMap on desktop, you'd get the desktop version of a dashboard within an interactive embed block. If you viewed the StoryMap on mobile, then you'd expect to get the mobile StoryMaps layout along with either the mobile layout of the dashboard if in interactive mode, or the static card option that would link to a new window and show the mobile dashboard layout full screen.
But this doesn't appear to work as expected, at the moment. When adding an ArcGIS Dashboard with a mobile layout to an embed block in a StoryMap, it appears to always default to the mobile view of the dashboard within the embed block, even when the StoryMap is displaying the desktop (landscape) layout. Changing the size of the block (small, medium, large) makes no difference.
Not sure if this is a bug, oversight, or user error, but it would be great to have this sorted out. So many folks view StoryMaps on phones, and simple dashboards are a great option for the embed block to show a basic bar chart or line graph, etc. in a StoryMap. It would be nice to have dynamic layout switching between the two apps work together.