[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?
enableProfilerTimer,
  enableSchedulerTracing,
  enableSuspenseServerRenderer,
  enableFundamentalAPI,
  warnAboutDefaultPropsOnFunctionComponents,
  enableScopeAPI,
} from 'shared/ReactFeatureFlags';
import invariant from 'shared/invariant';
import shallowEqual from 'shared/shallowEqual';
import getComponentName from 'shared/getComponentName';
import ReactStrictModeWarnings from './ReactStrictModeWarnings';
import {refineResolvedLazyComponent} from 'shared/ReactLazyComponent';
import {REACT_LAZY_TYPE, getIteratorFn} from 'shared/ReactSymbols';
import warning from 'shared/warning';
import warningWithoutStack from 'shared/warningWithoutStack';
import {
  setCurrentPhase,
  getCurrentFiberOwnerNameInDevOrNull,
  getCurrentFiberStackInDev,
} from './ReactCurrentFiber';
import {startWorkTimer, cancelWorkTimer} from './ReactDebugFiberPerf';
import {
  resolveFunctionForHotReloading,
  resolveForwardRefForHotReloading,
  resolveClassForHotReloading,
} from './ReactFiberHotReloading';
import {
  mountChildFibers,
  reconcileChildFibers,
  cloneChildFibers,