When using more than 5 tabs on the "Storymap Series - Tabbed Layout" map application template I'm experiencing an issue with the linked map extents. I have 8 tabs with maps. The maps were all created as "save-as" copies from an original map with the same original extent. Each time I open the storymap app the first 5 tabs open with seamless extent hand-offs. When I open tabs 6, 7, or 8 (reading left to right) the maps open at a different extent and then do a rapid shift/rubber-banding to match the extent of tabs 1-5. Once this initial adjustment is complete they are all in sync seamlessly with tabs 1-5 for the remainder of the session. If I close and then re-open the app the adjustment happens again. I have changed the order of the tabs so see if the issue was tied to a particular map but it still occurs with whatever maps are on tabs 6, 7 or 8.
I've inserted a link to the app in question.
Any insight into why this is occurring, or if others have experienced similar issues is appreciated.