In example parallel_query close window cause panic

[jiangheng90]

Bevy version

0.15.1

2025-01-25T08:15:34.071475Z  INFO bevy_diagnostic::system_information_diagnostics_plugin::internal: SystemInfo { os: "Windows 11 Home", kernel: "26100", cpu: "AMD Ryzen 7 5800 8-Core Processor", core_count: "8", memory: "15.9 GiB" }
2025-01-25T08:15:34.508783Z  INFO bevy_render::renderer: AdapterInfo { name: "NVIDIA GeForce RTX 3060 Ti", vendor: 4318, device: 9353, device_type: DiscreteGpu, driver: "NVIDIA", driver_info: "566.36", backend: Vulkan }

What you did

In example parallel_query build&run example then close window cause panic. I have tested both on windows and macos. I found this issue will happen on windows.

this panic is caused by window resource has been recycle but bounce_system is still trying to get and then cause panic.

// Bounce sprites outside the window
fn bounce_system(window: Single<&Window>, mut sprites: Query<(&Transform, &mut Velocity)>) {
    let width = window.width();
    let height = window.height();
    let left = width / -2.0;
    let right = width / 2.0;
    let bottom = height / -2.0;
    let top = height / 2.0;
    // The default batch size can also be overridden.
    // In this case a batch size of 32 is chosen to limit the overhead of
    // ParallelIterator, since negating a vector is very inexpensive.
    sprites
        .par_iter_mut()
        .batching_strategy(BatchingStrategy::fixed(32))
        .for_each(|(transform, mut v)| {
            if !(left < transform.translation.x
                && transform.translation.x < right
                && bottom < transform.translation.y
                && transform.translation.y < top)
            {
                // For simplicity, just reverse the velocity; don't use realistic bounces
                v.0 = -v.0;
            }
        });
}

Fixed in #17533

so I'm not sure this is a proper solution. but unregister all system first then recycle window maybe not easy on all platfoms