Invalid/extra warning in observable.box(array)

[nukisman]

configure({
  observableRequiresReaction: true, 
});

observable.box(1);        // ok
observable.box(() => 1);  // ok
observable.box({ a: 1 }); // ok
observable.box([1]);      // [mobx] Observable 'ObservableValue@4' being read outside a reactive context.

Intended outcome:

No extra warnings

Actual outcome:

Extra warning with array in new created the box

How to reproduce the issue:

Reproducible in nodejs and in browser

Versions

• mobx: 6.12.0
• node: v20.10.0
• Chrome: 121.0.6167.184, (x86_64)