Describe what you were doing when the bug occurred:
1. Add interaction tracing with unstable_trace
2. Record a profile, navigate to Profiler > Profiled Interactions
3. Error appears when scrolling view or immediately

![Kapture 2020-05-01 at 8 37 44](https://user-images.githubusercontent.com/131928/80805899-3688c400-8b87-11ea-88ca-3a7ae7de3589.gif)
---------------------------------------------
Please do not remove the text below this line
---------------------------------------------

DevTools version: 4.6.0-6cceaeb67

Call stack: at chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:40:344360
    at Array.map (<anonymous>)
    at chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:40:344166
    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)
    at Tc (chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:32:98781)
    at chrome-extension://fmkadmapgofadopljbjfkapdkoienihi/build/main.js:32:46014

Component stack: in Unknown
    in Unknown
    in div
    in div
    in n
    in div
    in bc
    in div
    in n
    in div
    in vc
    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
priorityLevel,
            timestamp,
          }) => ({
            changeDescriptions:
              changeDescriptions != null
                ? Array.from(changeDescriptions.entries())
                : null,
            duration,
            fiberActualDurations: Array.from(fiberActualDurations.entries()),
            fiberSelfDurations: Array.from(fiberSelfDurations.entries()),
            interactionIDs,
            priorityLevel,
            timestamp,
          }),
        ),
        displayName,
        initialTreeBaseDurations: Array.from(
          initialTreeBaseDurations.entries(),
        ),
        interactionCommits: Array.from(interactionCommits.entries()),
        interactions: Array.from(interactions.entries()),
        operations,
        rootID,
        snapshots: Array.from(snapshots.entries()),
      });
    },
  );
  return {
    version: PROFILER_EXPORT_VERSION,
    dataForRoots,