After installing the PackageManager via wine edit the file $HOME/.wine/drive_c/users/$(whoami)/MagicLeap/PackageManager/package-manager.ini using your favorite text editor and add the following arguments.
-Dprism.order=j2d
-Dsun.java2d.d3d=false
Now you should be able to start the PackageManager and bypass the blank black screen.
