write_text function cannot use different font than used use_text

[qarmin]

        layer.use_text(
            format!("{} ", header),
            FONT_SIZE,
            Mm(position.x),
            Mm(PAGE_HEIGHT - position.y - idx as f32 * 5.0),
            &fonts[&Fonts::RobotoRegular],
        );
        layer.write_text(*data, &fonts[&Fonts::RobotoBold]);

        layer.use_text(
            format!("{} ", header),
            FONT_SIZE,
            Mm(position.x),
            Mm(PAGE_HEIGHT - position.y - idx as f32 * 5.0 - 20.0),
            &fonts[&Fonts::RobotoBold],
        );
        layer.write_text(*data, &fonts[&Fonts::RobotoRegular]);

First part should be writeten with one font and second(after :) with another, but this not works

In fpdf2 with similar construction I got such output