In the ArcGIS Storymap when you create a tab with content the current default is to display to the extent it was saved at. This is terrible! Especially when switching screen sizes as many people who view online maps don't have the same screen. Currently when making online maps the custom location configuration will only be relative to the one it was saved at. Therefore items across screen sizes will not display in the center of the map across screens.
ESRI! PLEASE make it so when switching between custom configured locations in the story map the content can appear in the center!