I haven't upgraded yet, but with 1.0 on macOS, I see a relative path in the sodipodi:docname attribute of the root element (not an absolute path, so either something changed in 1.1 or behavior differs between OSes). This is where you are seeing it correct?
Saving as "Plain SVG" does not include this (or any other sodipodi namespace elements, by design). Not great that the default save format includes this, but FWIW best practice is to save as "Plain SVG" for interoperability.
Saving as "Plain SVG" does not include this (or any other sodipodi namespace elements, by design). Not great that the default save format includes this, but FWIW best practice is to save as "Plain SVG" for interoperability.