When launching Unity WebGL games from the Itch App(25.4.1) they stall when loading.

Note: Builds work fine when run in Firefox, Edge, or Chrome.

Debug spits out:

failed to asynchronously prepare wasm: CompileError: WebAssembly.instantiate(): Wasm code generation disallowed by embedder

I had the same problem and, I think all unity games run into this problem.