Hi,
I've recently had the need to create a scrum board that span multiple projects, so created the board using a query. Which I finally managed to get done 
The first issue that I had was that I couldn't create a sprint, due to not have the required access to manage sprints on all projects. Which was quickly resolved.
Now that I have the sprint created, I can't do any of the following:
- Change the name of the sprint
- Close the sprint.
I get the following when I hover over the greyed out complete sprint:

I've gone into each of the individual boards and confirmed that I can do create and close sprints.
So was wondering if this was a known issue ?
Thanks