Clarification on SSR

[LoiLock]

A while back, someone said that Valtio, as it is, doesn't really work with SSR as the state between requests would get mixed up. Could someone clarify what is meant by that? Does it mean that user A could see the state requested by user B under certain circumstances?

For reference: (#14 (comment))

[dai-shi]

It's not precisely related to Valtio.
Any global variable is shared on the server across sessions.

let globalCounter = 0;

const Foo = () => {
  const counter = ++globalCounter;
  return <p>count: {counter}</p>;
};