Why doesn't nginx cache one file?

Question

Nginx

The config looks something like this:

add_header Cache-Control "private, no-cache";
...
location ~* \.(?:ico|css|gif|jpe?g|png|svg|js|wasm)(\?[a-zA-Z0-9%\-\._~]+=\d+)?$ {
  add_header Cache-Control "public, max-age=31536000";
        break;
}

All files except *.wasm are cached remarkably.
There are no other directives that would affect them.