### 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 (displayNameRegExp.test(displayName)) {
            return true;
          }
        }
      }
    }
    if (_debugSource != null && hideElementsWithPaths.size > 0) {
      const {fileName} = _debugSource;
      
      for (const pathRegExp of hideElementsWithPaths) {
        if (pathRegExp.test(fileName)) {
          return true;
        }
      }
    }
    return false;
  }
  
  function getElementTypeForFiber(fiber: Fiber): ElementType {
    const {type, tag} = fiber;
    switch (tag) {
      case ClassComponent:
      case IncompleteClassComponent:
        return ElementTypeClass;
      case FunctionComponent:
      case IndeterminateComponent:
        return ElementTypeFunction;
      case ForwardRef:
        return ElementTypeForwardRef;
      case HostRoot: