Function should_render_private_fields 

fn should_render_private_fields(
    db: &RootDatabase,
    def_crate: Crate,
    hover_crate: Crate,
) -> bool

Hover location	Definition location	Render private fields?
Workspace crate	Workspace crate	Yes
Workspace crate	External/library crate	No
External/library crate	Same external/library crate	Yes
External/library crate	Different external/library crate	No
Anywhere	Same crate as definition	Yes