This issue will be resolved in the next major release of Cloud Director.
Workaround:
To workaround this issue the affected standalone VM can be converted to a vApp so that it can be completely undeployed and deleted.
Example steps would be as follows:
- From the Tenant UI of Cloud Director navigate to the Datacenters > Compute > Virtual Machines view and locate the affected standalone VM.
- Click Actions menu for the affected VM and select Convert to vApp.
- Complete the instructions to save the standalone VM as a vApp.
- Locate the newly created vApp in the Datacenters > Compute > vApps view.
- Power Off the vApp to completely undeploy it and then Delete the vApp to remove both it and the VM within.