[From the Profiler docs](https://reactjs.org/docs/profiler.html#onrender-callback):

> The Profiler requires an onRender function as a prop. React calls this function any time a component within the profiled tree “commits” an update.

However, given:

```jsx
import React from 'react'
import ReactDOM from 'react-dom'

function Counter() {
  const [count, setCount] = React.useState(0)
  const increment = () => setCount(c => c + 1)
  return <button onClick={increment}>{count}</button>
}

function App() {
  return (
    <div>
      <React.Profiler
        id="counter"
        onRender={() => console.log('called')}
      >
        <div>
          Profiled counter
          <Counter />
        </div>
      </React.Profiler>
      <div>
        Unprofiled counter
        <Counter />
      </div>
    </div>
  )
}

ReactDOM.render(<App />, document.getElementById('root'))
```

I'm getting a log when I click on the unprofiled counter.

Reproduction: https://codesandbox.io/s/react-codesandbox-tnff6

Am I misunderstanding this API, or is this a bug?
Scheduler.unstable_advanceTime(2);
            return null;
          }
        }
        ReactTestRenderer.create(
          <React.Profiler id="test" onRender={callback}>
            <ClassComponent />
          </React.Profiler>,
        );
        expect(callback).toHaveBeenCalledTimes(1);
      });
    });
  });
  describe('interaction tracing', () => {
    let onInteractionScheduledWorkCompleted;
    let onInteractionTraced;
    let onWorkCanceled;
    let onWorkScheduled;
    let onWorkStarted;
    let onWorkStopped;
    let throwInOnInteractionScheduledWorkCompleted;
    let throwInOnWorkScheduled;
    let throwInOnWorkStarted;
    let throwInOnWorkStopped;
    const getWorkForReactThreads = mockFn =>
      mockFn.mock.calls.filter(([interactions, threadID]) => threadID > 0);
    function loadModulesForTracing(params) {