The implementation might vary and we are to close from the 7.0 release to add it in. We plan to add it in 7.1.
Please keep those ideas coming!
In many cases I launch the cloneable instance(s) and launch the API tester on demand. In this case the API tester doesnt show if any instances are already running, I need to press the refresh button which I forgot in most of the cases. Other developer not that familiar with DQMH forgot it all the time causing confusion.
I have fixed this in the template module we use for cloneables: