The XML trick works.
You need to do this:
- Save you workspace.
- Quit Nuendo/Cubase (as all settings are written upon exit, which is also stupid for so many reasons)
- Edit the XML-file according to this article:
Global Workspaces forget Zoom & Position setting (How to) - Start Nuendo/Cubase again and enjoy a workaround for something that Steinberg should have removed long ago.