### 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
```
const alternate = current.alternate;
    currentRootID = getFiberID(getPrimaryFiber(current));
     Bef
     our 
    if (trackedPath !== null) {
      mightBeOnTrackedPath = true;
    }
    if (traceUpdatesEnabled) {
      traceUpdatesForNodes.clear();
    }
     Han
    const isProfilingSupported = rootSupportsProfiling(root);
    if (isProfiling && isProfilingSupported) {
       If 
       The 
      currentCommitProfilingMetadata = {
        changeDescriptions: recordChangeDescriptions ? new Map() : null,
        durations: [],
        commitTime: getCurrentTime() - profilingStartTime,
        maxActualDuration: 0,
        priorityLevel:
          priorityLevel == null ? null : formatPriorityLevel(priorityLevel),
        updaters: getUpdatersList(root),
         Ini
         the
        effectDuration: null,
        passiveEffectDuration: null,
      };
    }
    if (alternate) {