PW Web View direct access to subfolder

I want to give an external user a link to direct access to a subfolder in ProjectWise Web View, and to not give access to the folder tree above it.

This was possible in the old Web Server, but seems not to be allowed in PW Web View. The link fails and sends you back to the top level where nothing is visible because the user has no rights there.

Can anyone confirm that this is how it is supposed to work, so that I can't use Web View for this, and I would need to publish the subfolder as a project in PW Web ?