mounted event is not triggered in fullstack renderer

[hampuslidin]

Problem

I am trying to listen to the mounted event in a component to get it's size after it has been rendered. The problem is that I can't get it to work in the fullstack renderer (dioxus-fullstack). It does work in the web renderer (dioxus-web) however.

Steps To Reproduce

A small example of how I am using it:

use dioxus::html::geometry::euclid::Rect;
use dioxus_fullstack::prelude::*;

fn main() {
    dioxus_logger::init(log::LevelFilter::Debug).expect("failed to initialize logger");
    
    /* Works woth dioxus-web. */
    dioxus_web::launch(App);

    /* Doesn't work with dioxus-fullstack. */
    // LaunchBuilder::new(App).launch();
}

pub fn App(cx: Scope) -> Element {
    let size = use_state(cx, Rect::zero);

    log::debug!("App");

    render! {
        div {
            onmounted: |event|
            {
                log::debug!("Mounted");
                to_owned![size];
                async move {
                    if let Ok(rect) = event.inner().get_client_rect().await {
                        size.set(rect);
                    }
                }
            },
            "{size:?}"
        }
    }
}

The problem is also reproducible in the following main() setup:

fn main() {
    dioxus_logger::init(log::LevelFilter::Debug).expect("failed to initialize logger");

    #[cfg(feature = "web")]
    dioxus_web::launch_with_props(
        App,
        get_root_props_from_document().unwrap_or_default(),
        dioxus_web::Config::new().hydrate(true),
    );

    #[cfg(feature = "ssr")]
    {
        tokio::runtime::Runtime::new()
            .unwrap()
            .block_on(async move {
                let addr = std::net::SocketAddr::from(([127, 0, 0, 1], 8080));
                axum::Server::bind(&addr)
                    .serve(
                        axum::Router::new()
                            .serve_dioxus_application("", ServeConfigBuilder::new(App, ()))
                            .into_make_service(),
                    )
                    .await
                    .unwrap();
            });
    }
}

Expected behavior

Using the web renderer will yield the output "App\nMounted\nApp" with the inner HTML "Rect(860.0x18.0 at (0.0, 0.0))". Using the fullstack renderer will yield the output "App" with the inner HTML "Rect(0.0x0.0 at (0.0, 0.0))". Expected behavior is that both methods should have the same output.

Environment:

• Dioxus version: 0.4.3
• Rust version: 1.74.1
• OS info: macOS Monteray
• App platform: fullstack

Questionnaire

• I'm interested in fixing this myself but don't know where to start
• I would like to fix and I have a solution
• I don't have time to fix this right now, but maybe later