U disk copy program icon problem

Steps to reproduce:

Icon problem

Actual Behavior:
After the USB flash drive is copied, take out the USB flash drive, the interface still retains the USB flash drive icon, and can not be deleted
Expected Behavior:

Workaround Suggestion:
Description of potential workarounds

Robot Serial Number:
Robot serial number or simulator?

Affected Version(s):
Polyscope/controller/documentaion/API version