The action submenu only shows options if you do have options to perform. If not, it will appear empty.
You can send email if you configured emails in the fop2 buttons page in freepbx fop2admin or your buttons.cfg file
You can add/remove from queue if you have all/queuemanager permissions, and you actually see a queue button on the display
you can start chat, if you have "all" or "chat" permissions and a license that allows chat.
If no conditions are met, you will see that empty line.. the next release will display nothing at all (the line glitch is fixed).
Best regards,
