Hi,
When setting up a future sprint in the backlog, I no longer get the ... link to "View summary of assigned work" link for future sprints. It does appear for the current sprint. I am quite sure that I used to get that link previously for future sprints.
I do get the link for future sprints on another test implementation that was used to create the production setup. Both instances are running the same version of Jira. As far as I'm aware no major changes have been made between the two instances.
Version: JIRA Software 7.8.1

Current sprint with the ... link
Future sprint without link