Describe what you were doing when the bug occurred:
1. recorded profiling results
2. browsing results by paging to the right
3. crash

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DevTools version: 4.8.2-fed4ae024

Call stack: at updateTree (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:17854:21)
    at getCommitTree (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:17717:25)
    at ProfilingCache.getCommitTree (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:18265:14)
    at CommitFlamegraphAutoSizer (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:31718:33)
    at vh (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:11067:7)
    at fi (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:11733:7)
    at ck (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:14430:86)
    at bk (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:13779:11)
    at ak (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:13768:5)
    at Sj (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:13750:7)

Component stack: at CommitFlamegraphAutoSizer (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:31701:48)
    at div
    at div
    at div
    at SettingsModalContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:26139:23)
    at Profiler_Profiler (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:33363:48)
    at ErrorBoundary (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:27172:5)
    at PortaledContent (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:27303:32)
    at div
    at div
    at ProfilerContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:30463:23)
    at TreeContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:22538:23)
    at SettingsContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:23040:27)
    at ModalDialogContextController (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:28328:23)
    at DevTools_DevTools (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:33797:21)
pendingStringTable.forEach((value, key) => {
      operations[i++] = key.length;
      const encodedKey = utfEncodeString(key);
      for (let j = 0; j < encodedKey.length; j++) {
        operations[i + j] = encodedKey[j];
      }
      i += key.length;
    });
    if (numUnmountIDs > 0) {
       A
      operations[i++] = TREE_OPERATION_REMOVE;
       T
      operations[i++] = numUnmountIDs;
       F
       T
       S
      for (let j = pendingRealUnmountedIDs.length - 1; j >= 0; j--) {
        operations[i++] = pendingRealUnmountedIDs[j];
      }
       Fill in the simulated unmounts (hidden Suspense subtrees) in their order.
       (We want children to go before parents.)
       They go *after* the real unmounts because we know for sure they won't be
       children of already pushed "real" IDs. If they were, we wouldn't be able
       to discover them during the traversal, as they would have been deleted.
      for (let j = 0; j < pendingSimulatedUnmountedIDs.length; j++) {
        operations[i + j] = pendingSimulatedUnmountedIDs[j];
      }
      i += pendingSimulatedUnmountedIDs.length;
       T
      if (pendingUnmountedRootID !== null) {