`lookup_arrow` called arrow's `slice` which is defined to panic on out of bounds slices.

example code that would create such an entity

```rust
    // And some points in front of the rectangle.
    MsgSender::new("2d_layering/points_between_top_and_middle")
        .with_timepoint(sim_time(1 as _))
        .with_component(
            &(0..256).map(|i| Point2D::new(...).collect::<Vec<_>>(),
        )?
        .with_component(&[DrawOrder(1.51)])?
        .send(rec_stream)?;
```