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)
if (parentA.child === parentB.child) {
        let child = parentA.child;
        while (child) {
          if (child === a) {
             We'
            if (isFiberMountedImpl(parentA) !== MOUNTED) {
              throw Error('Unable to find node on an unmounted component.');
            }
            return fiber;
          }
          if (child === b) {
             We'
            if (isFiberMountedImpl(parentA) !== MOUNTED) {
              throw Error('Unable to find node on an unmounted component.');
            }
            return alternate;
          }
          child = child.sibling;
        }
         We 
         way 
        throw Error('Unable to find node on an unmounted component.');
      }
      if (a.return !== b.return) {
         The 
         fib
         bel
         set 
        a = parentA;
        b = parentB;