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)
(e.g. when a fiber is re-rendered or when a fiber gets removed).
    displayNamesByRootID = new Map();
    initialTreeBaseDurationsMap = new Map(idToTreeBaseDurationMap);
    initialIDToRootMap = new Map(idToRootMap);
    idToContextsMap = new Map();
    hook.getFiberRoots(rendererID).forEach(root => {
      const rootID = getFiberID(getPrimaryFiber(root.current));
      ((displayNamesByRootID: any): DisplayNamesByRootID).set(
        rootID,
        getDisplayNameForRoot(root.current),
      );
      if (shouldRecordChangeDescriptions) {
         Rec
         Fib
         so 
        crawlToInitializeContextsMap(root.current);
      }
    });
    isProfiling = true;
    profilingStartTime = getCurrentTime();
    rootToCommitProfilingMetadataMap = new Map();
  }
  function stopProfiling() {
    isProfiling = false;
    recordChangeDescriptions = false;
  }
   Automatically start profiling so that we don't miss timing info from initial "mount".
  if (
    sessionStorageGetItem(SESSION_STORAGE_RELOAD_AND_PROFILE_KEY) === 'true'
  ) {