Describe what you were doing when the bug occurred:
1. Started profiling the application
2. Tried to stop it after couple of navigation and actions on spa, but failed to stop.
3. Finally clicking multiple times on Stop has stopped profiling, and got his issue in graph option

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DevTools version: 4.6.0-6cceaeb67

Call stack: at chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:40:167472
    at Map.forEach (<anonymous>)
    at commitIndex (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:40:167418)
    at e.getRankedChartData (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:40:167941)
    at lc (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:40:342270)
    at ci (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:32:59620)
    at Ll (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:32:109960)
    at qc (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:32:102381)
    at Hc (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:32:102306)
    at Vc (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:32:102171)

Component stack: in lc
    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
t
        return false;
      }
    }
     T
     T
    mightBeOnTrackedPath = false;
     H
    return true;
  }
  function updateTrackedPathStateAfterMount(mightSiblingsBeOnTrackedPath) {
     u
     N
    mightBeOnTrackedPath = mightSiblingsBeOnTrackedPath;
  }
   Roots don't have a real persistent identity.
   A root's "pseudo key" is "childDisplayName:indexWithThatName".
   For example, "App:0" or, in case of similar roots, "Story:0", "Story:1", etc.
   We will use this to try to disambiguate roots when restoring selection between reloads.
  const rootPseudoKeys: Map<number, string> = new Map();
  const rootDisplayNameCounter: Map<string, number> = new Map();
  function setRootPseudoKey(id: number, fiber: Fiber) {
    const name = getDisplayNameForRoot(fiber);
    const counter = rootDisplayNameCounter.get(name) || 0;
    rootDisplayNameCounter.set(name, counter + 1);
    const pseudoKey = `${name}:${counter}`;
    rootPseudoKeys.set(id, pseudoKey);
  }
  function removeRootPseudoKey(id: number) {
    const pseudoKey = rootPseudoKeys.get(id);