### 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
```
if (maybeFallbackFiber != null) {
          fiber = maybeFallbackFiber;
        }
      }
      const hostFibers = findAllCurrentHostFibers(id);
      return hostFibers.map(hostFiber => hostFiber.stateNode).filter(Boolean);
    } catch (err) {
       The 
      return null;
    }
  }
  function getDisplayNameForFiberID(id) {
    const fiber = idToFiberMap.get(id);
    return fiber != null ? getDisplayNameForFiber(((fiber: any): Fiber)) : null;
  }
  function getFiberIDForNative(
    hostInstance,
    findNearestUnfilteredAncestor = false,
  ) {
    let fiber = renderer.findFiberByHostInstance(hostInstance);
    if (fiber != null) {
      if (findNearestUnfilteredAncestor) {
        while (fiber !== null && shouldFilterFiber(fiber)) {
          fiber = fiber.return;
        }
      }
      return getFiberID(getPrimaryFiber(((fiber: any): Fiber)));
    }
    return null;
  }