I can't see anything sandboxed despite it saying that there are items in it.

It says there are 9 items in it but when I click it comes up with nothing in it. Running Windows 10 64 bit using the latest version of CIS.

They could be running with their windows hidden or could be background service executables that has no visible windows for itself. Some malware will execute IE or other installed browsers with the windows of the browser hidden.