### 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 (node === fiber) {
        return fibers;
      }
      while (!node.sibling) {
        if (!node.return || node.return === fiber) {
          return fibers;
        }
        node = node.return;
      }
      node.sibling.return = node.return;
      node = node.sibling;
    }
     Flow needs the return here, but ESLint complains about it.
     eslint-disable-next-line no-unreachable
    return fibers;
  }
  function findNativeNodesForFiberID(id: number) {
    try {
      let fiber = findCurrentFiberUsingSlowPathById(id);
      if (fiber === null) {
        return null;
      }
       Spe
      const isTimedOutSuspense =
        fiber.tag === SuspenseComponent && fiber.memoizedState !== null;
      if (isTimedOutSuspense) {
         A t
         Try 
        const maybeFallbackFiber = fiber.child && fiber.child.sibling;