cant get transparent window example to work

[WolfLikeASir]

Followed the steps to run the example like any other, but instead of having a transparent background the Bevy logo sits on a pure black one.
Made sure everything is up to date, running it on Windows.
https://github.com/bevyengine/bevy/blob/main/examples/window/transparent_window.rs

[Rratic]

The comments in bevy_windows: windows.rs says You should also set the window `composite_alpha_mode` to `CompositeAlphaMode::PostMultiplied`., but that may not be in the list of supported alpha modes: [Opaque]. You can check #10929