Hi ibizwu,
I have a similiar issue like you. at the following link, it looks like somebody got it running in WS1: https://communities.vmware.com/t5/Workspace-ONE-Discussions/Privacy-Preference-profile-example-for-V...
Maybe this helps you. This guy in the link has set up a profile to grant full disc access. i did it the same way and it looks like its working. However this only shows up within the profiles (system preferences -> Profil) it does not show up in Security & Privacy -> Privacy -> Full Disk Access.
Maybe you can give mie a hand too. I try to set up a Kernel extension, not for BitDefender but some other Anti-Virus. Can you post a screenshot what you have entered within the KEXT or the System Extension?
Some day ago, ifound a german Apple artical which said, that some kernel extensions only work if the device is within the apple business portal. Maybe it is the same with the full access profiles for the local harddisk
Many Thanks.
paul_eddy