cx lifetime error passing tweened to component

[andrewbaxter]

Here's a minimal example

#[derive(Props)]
struct AProps<'a> {
    value: &'a Tweened<'a, i32>,
}

#[component]
fn A<'a, G: Html>(cx: Scope<'a>, props: AProps<'a>) -> View<G> {
    view!{
        cx,
        (format!("{}", *props.value.get()))
    }
}

fn main() {
    sycamore::render(|cx| {
        let a = create_tweened_signal(cx, 0, Duration::from_millis(1000), easing::bounce_in);
        let x = create_signal(cx, vec![1, 2, 3, 4]);

        view!{
            cx,
            Indexed(iterable = x, view = move |cx, _x| view!{
                cx,
                A(value = a)
            })
        }
    });
}

I get

error[E0521]: borrowed data escapes outside of closure
  --> examples/components/src/main.rs:31:56
   |
26 |           let a = create_tweened_signal(cx, 0, Duration::from_millis(1000), easing::bounce_in);
   |               - `a` declared here, outside of the closure body
...
31 |               Indexed(iterable = x, view = move |cx, _x| view!{
   |  ________________________________________________--______^
   | |                                                |
   | |                                                `cx` is a reference that is only valid in the closure body
32 | |                 cx,
33 | |                 A(value = a)
34 | |             })
   | |_____________^ `cx` escapes the closure body here
   |
   = note: this error originates in the macro `$crate::view_with_elements` which comes from the expansion of the macro `view` (in Nightly builds, run with -Z macro-backtrace for more info)

AFAICT tweened hods a reference to cx? Signal/ReadSignal don't seem to have this issue. Is there some idiom I missed here?