Describe what you were doing when the bug occurred:

Profiled the new FB. Scrolled down to tail loads.

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Please do not remove the text below this line
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DevTools version: 4.6.0-a2fb84beb

Call stack: at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:345591
    at Array.map (<anonymous>)
    at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:345397
    at Ai (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:62580)
    at zl (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:112694)
    at jc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:104789)
    at Oc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:104717)
    at Tc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:104585)
    at gc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:101042)
    at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:47376

Component stack: at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:344679
    at div
    at div
    at n (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:194307)
    at div
    at Cc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:346311)
    at div
    at n (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:3:8163)
    at div
    at bc
    at div
    at div
    at div
    at Do (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:262081)
    at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:364048
    at n (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:274563)
    at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:277138
    at div
    at div
    at ol (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:323458)
    at Ze (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:205764)
    at pn (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:215038)
    at $a (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:292153)
    at ws (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:369231)
/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */
import {PROFILER_EXPORT_VERSION} from 'react-devtools-shared/src/constants';
import type {ProfilingDataBackend} from 'react-devtools-shared/src/backend/types';
import type {
  ProfilingDataExport,
  ProfilingDataForRootExport,
  ProfilingDataForRootFrontend,
  ProfilingDataFrontend,
  SnapshotNode,
} from './types';
const commitGradient = [
  'var(--color-commit-gradient-0)',
  'var(--color-commit-gradient-1)',
  'var(--color-commit-gradient-2)',