<!-- Please provide a clear and concise description of what the bug is. Include screenshots if needed. Please test using the latest version of the relevant React packages to make sure your issue has not already been fixed. --> React version: ## Steps To Reproduce Repro steps using confidential internal fb tool provided separately (https://fb.workplace.com/groups/2299331103613797/permalink/2605716262975278/) Gist of the repro: 1) open app 2) open react dev tools to profiling tab 3) turn on "Record why each component rendered while profiling" 4) interact with app 5) following error occurs: "TypeError: Cannot read property 'memoizedState' of null" 6) inspecting the flamegraph now shows incomplete information Based on the stack trace, it looks like the issue occurs specifically on this line: https://github.com/facebook/react/blob/3e94bce765d355d74f6a60feb4addb6d196e3482/packages/react-devtools-shared/src/backend/console.js#L135