Can't save SNAP LibreOffice Docs to .HOME directory

I understand part of the security of SNAP apps is not allowing them read/write permissions to your home directory. And I like that. But how can I override that? I want to be able to allow my SNAP LibreOffice to read/write to my home directory.

It works for me, I can save a document edited by snap installation of LibreOffice 6.1 under Ubuntu 16.04 in my home directory.

What happens when you try to do that?