In Chrome, when in a process model and on a sub-process Task, clicking the plus button in the box generally brings up a small display of the attached sub-process, which a user can open, unlink, etc. The options still work, but the preview image does not display. A moving circle just keeps going round and round. It should show the preview.
In addition, with the same shape, if a user wants to attach a current process using the +, when the process is selected, the same thing, spinning circle with no preview. Please advise.