### 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
```
} else {
      renderer.prepareViewAttributeSource(id, path);
    }
  };
  viewElementSource = ({id, rendererID}: ElementAndRendererID) => {
    const renderer = this._rendererInterfaces[rendererID];
    if (renderer == null) {
      console.warn(`Invalid renderer id "${rendererID}" for element "${id}"`);
    } else {
      renderer.prepareViewElementSource(id);
    }
  };
  onTraceUpdates = (nodes: Set<NativeType>) => {
    this.emit('traceUpdates', nodes);
  };
  onHookOperations = (operations: Array<number>) => {
    if (__DEBUG__) {
      debug('onHookOperations', operations);
    }