Bevy windowing crashes on launch in MacOs 26

[ElliottjPierce]

Bevy version and features

Just tried out 0.18, default features.

Relevant system information

MacOs 26.2

What you did

Run the clear_color example.

What went wrong

Bevy crashes immediately with:

invalid message send to -[_TtGCs23_ContiguousArrayStorageCSo8NSScreen_$ countByEnumeratingWithState:objects:count:]: expected return to have type code 'q', but found 'Q'
ERROR winit::platform_impl::macos::event_handler: tried to run event handler, but no handler was set

Additional information

This is a bug with winit 0.30.8, I think and it looks like it was fixed in 0.30.12.
A similar issue is emilk/egui#7376 .
And the winit fix is here: rust-windowing/winit#4302

I think we just need to bump the winit version number.

[tychedelia]

Doesn't seem to crash on sequoia:

2026-01-20T04:13:37.953969Z  INFO bevy_diagnostic::system_information_diagnostics_plugin::internal: SystemInfo { os: "macOS 15.6.1 Sequoia", kernel: "24.6.0", cpu: "Apple M2 Max", core_count: "12", memory: "32.0 GiB" }
2026-01-20T04:13:38.114560Z  INFO bevy_render::renderer: AdapterInfo { name: "Apple M2 Max", vendor: 0, device: 0, device_type: IntegratedGpu, driver: "", driver_info: "", backend: Metal }
2026-01-20T04:13:39.053846Z  INFO bevy_render::batching::gpu_preprocessing: GPU preprocessing is fully supported on this device.
2026-01-20T04:13:39.133538Z  INFO bevy_winit::system: Creating new window clear_color (0v0)

[ElliottjPierce]

I agree. It's only after MacOs 26.

[madsmtm]

You should be able to fix this locally with cargo update -p winit.

[mockersf]

Not sure we can do much on Bevy side.

New projects will get the new winit version that works, existing project won't unless they run cargo update. We could release a patch, but project would have to run cargo update to get it anyway.

Not against a PR to set the correct minimum version of winit, but not a strong need either

[ElliottjPierce]

Ah. Yeah, cargo update makes it work. Strange. I did cargo clean and expected that to build the latest version, but it didn't. I thought bevy had specified 0.30.8 somewhere, but I guess not. Thanks!

Yeah, I think we can close this. I just forgot how cargo works lol.