Describe what you were doing when the bug occurred:
1. 
2. 
3. 

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DevTools version: 4.11.0-39713716aa

Call stack: at chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:20884:13
    at Map.forEach (<anonymous>)
    at RankedChartBuilder_getChartData (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:20880:24)
    at ProfilingCache_ProfilingCache.getRankedChartData (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:21004:11)
    at CommitRankedAutoSizer (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:35717:32)
    at Rh (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:13245:7)
    at Ci (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:13944:7)
    at uk (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:16725:86)
    at tk (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:16245:11)
    at qk (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:16237:23)

Component stack: at CommitRankedAutoSizer (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:35696:34)
    at div
    at div
    at div
    at SettingsModalContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:29121:3)
    at Profiler_Profiler (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:37243:34)
    at ErrorBoundary_ErrorBoundary (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:30035:5)
    at PortaledContent (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:30157:5)
    at div
    at div
    at ProfilerContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:34264:3)
    at TreeContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:25356:3)
    at SettingsContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:25963:3)
    at ModalDialogContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:30300:3)
    at DevTools_DevTools (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:37639:3)
recordUnmount(current, false);
      }
    } else {
       Mou
      setRootPseudoKey(currentRootID, current);
      mountFiberRecursively(current, null, false, false);
    }
    if (isProfiling && isProfilingSupported) {
      const commitProfilingMetadata = ((rootToCommitProfilingMetadataMap: any): CommitProfilingMetadataMap).get(
        currentRootID,
      );
      if (commitProfilingMetadata != null) {
        commitProfilingMetadata.push(
          ((currentCommitProfilingMetadata: any): CommitProfilingData),
        );
      } else {
        ((rootToCommitProfilingMetadataMap: any): CommitProfilingMetadataMap).set(
          currentRootID,
          [((currentCommitProfilingMetadata: any): CommitProfilingData)],
        );
      }
    }
     We're done here.
    flushPendingEvents(root);
    if (traceUpdatesEnabled) {
      hook.emit('traceUpdates', traceUpdatesForNodes);
    }
    currentRootID = -1;
  }
  function findAllCurrentHostFibers(id: number): $ReadOnlyArray<Fiber> {