rich_text italic() Non-English garbled characters

[cyberdoors]

code:

use floem::keyboard::{Key, NamedKey};
use floem::prelude::*;


fn main() {
    floem::launch(markdown_view);
}

fn markdown_view() -> impl IntoView {
    let builder =
        "abc 中文1 こんにちは".red().italic() + "def 中文2 こんにちは".blue().oblique() + "\nefg 中文3 こんにちは";
    let view = v_stack((
       builder.style(|s| s.padding_left(15)),
    ))
        .style(|s| s.size_full().items_center().justify_center().gap(10));

    let id = view.id();
    view.on_key_up(
        Key::Named(NamedKey::F11),
        |m| m.is_empty(),
        move |_| id.inspect(),
    )
}

screenshot：