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)
const initialTreeBaseDurations: Array<[number, number]> = [];
        const allInteractions: Map<number, Interaction> = new Map();
        const interactionCommits: Map<number, Array<number>> = new Map();
        const displayName =
          (displayNamesByRootID !== null && displayNamesByRootID.get(rootID)) ||
          'Unknown';
        if (initialTreeBaseDurationsMap != null) {
          initialTreeBaseDurationsMap.forEach((treeBaseDuration, id) => {
            if (
              initialIDToRootMap != null &&
              initialIDToRootMap.get(id) === rootID
            ) {
               W
               b
              initialTreeBaseDurations.push([id, treeBaseDuration]);
            }
          });
        }
        commitProfilingMetadata.forEach((commitProfilingData, commitIndex) => {
          const {
            changeDescriptions,
            durations,
            interactions,
            maxActualDuration,
            priorityLevel,
            commitTime,
          } = commitProfilingData;
          const interactionIDs: Array<number> = [];
          interactions.forEach(interaction => {
            if (!allInteractions.has(interaction.id)) {