Hello! Since today I have been unable to run Godot Engine 4 HTML5 games on itch.io using Firefox browser on Android.

The error messages states that "Cross Origin Isolation" and "SharedArrayBuffer" are missing.

The projects I tried on have experimental support for SharedArrayBuffer enabled. I have no updated Firefox app and these games used to run and weren't updated either. Thus I believe it's something on itch.io side or somewhere on the web.

They work fine on Chrome Android and on Firefox Desktop.

I can second this, the same thing happens to me.

I also opened an issue on your GitHub page: https://github.com/itchio/itch.io/issues/1527

I can confirm that the same thing happens on my game “Shingo!”.

Error message shown:

Error The following features required to run Godot projects on the Web are missing: Cross Origin Isolation - Check web server configuration (send correct headers) SharedArrayBuffer - Check web server configurations (send correct headers)

The SharedArrayBuffer checkbox is turned on.