### Describe what you were doing when the bug occurred:
1. I did profiling on a list, that gets updated on each pagination api call.
2. Once the profiling was done, I moved around in the Profiler to view the Flamegraph
3. Moving to second capture, the Profiler crashed.


**DevTools version**: 4.6.0-6cceaeb67

```
Component stack: in ec
    in div
    in div
    in div
    in So
    in Unknown
    in n
    in Unknown
    in div
    in div
    in rl
    in Ze
    in fn
    in Ga
    in _s
```
this._bridge.send('profilingStatus', this._isProfiling);
  };
  stopProfiling = () => {
    this._isProfiling = false;
    this._recordChangeDescriptions = false;
    for (const rendererID in this._rendererInterfaces) {
      const renderer = ((this._rendererInterfaces[
        (rendererID: any)
      ]: any): RendererInterface);
      renderer.stopProfiling();
    }
    this._bridge.send('profilingStatus', this._isProfiling);
  };
  storeAsGlobal = ({count, id, path, rendererID}: StoreAsGlobalParams) => {
    const renderer = this._rendererInterfaces[rendererID];
    if (renderer == null) {
      console.warn(`Invalid renderer id "${rendererID}" for element "${id}"`);
    } else {
      renderer.storeAsGlobal(id, path, count);
    }
  };
  updateConsolePatchSettings = ({
    appendComponentStack,
    breakOnConsoleErrors,
    showInlineWarningsAndErrors,
  }: {|
    appendComponentStack: boolean,
    breakOnConsoleErrors: boolean,
    showInlineWarningsAndErrors: boolean,
  |}) => {