Getting a property change sometimes blocks forever

Hello, thanks for the wonderful library. I've been having an issue where things freeze up when using zbus. I narrowed this down to PropertyChanged::get calls blocking forever. This only seems to happen sometimes, but is much more common when using a multi-threaded tokio runtime.

This piece of code reproduces the issue consistently for me and will get stuck forever:

use futures_util::StreamExt;
use zbus::{zvariant::OwnedObjectPath, Connection};

#[zbus::dbus_proxy(
    interface = "net.connman.iwd.Station",
    default_service = "net.connman.iwd"
)]
trait Station {
    #[dbus_proxy(property)]
    fn connected_network(&self) -> zbus::Result<OwnedObjectPath>;
}

#[tokio::main]
async fn main() {
    let connection = Connection::system().await.unwrap();

    let station = StationProxy::builder(&connection)
        .path("/net/connman/iwd/0/33")
        .unwrap()
        .build()
        .await
        .unwrap();

    let mut changes = station.receive_connected_network_changed().await;

    while let Some(change) = changes.next().await {
        println!("getting change");
        let _result = change.get().await;
        println!("got change");
    }
}

When I change WiFi networks a couple of times, this gets stuck forever waiting for the change.get() call to resolve. If I change this example to use a single threaded tokio executor it never gets stuck, so I'm guessing this isn't expected behavior.