Empty r#type for struct Test(pub [u8; 32])

[coder0xff]

It works fine with struct Test([u8; 32])

        UnnamedField {
            vis: Default,
            type: [
                Group {
                    delimiter: Bracket,
                    stream: TokenStream [
                        Ident {
                            sym: u8,
                        },
                        Punct {
                            char: ';',
                            spacing: Alone,
                        },
                        Literal {
                            lit: 32,
                        },
                    ],
                },
            ],
            attributes: [],
        },

But struct Test(pub [u8; 32]) comes out

        UnnamedField {
            vis: Pub,
            type: [],
            attributes: [],
        },