when I try to pre clear the disk, the icon on main goes away, but when I open pre clear I was able to find a log for the operation. it looks like because there is an issue with the drive information, it thinks the disk is in the array.
in my case this is a new disk, fresh out of the box into the server.
the disk selected is the one listed in the "potential candidates for clearing" list.
Edit: adding screen shot of how disk is appearing in pre clear plugin