Robert S.

I wonder if we change the `PersistStoreMap` from a [Map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) to a [WeakMap](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap) if that will fix the issue when developing. I can look into this. @quarrant can you re-open...

Can you add an https://codesandbox.io/ example of what you are trying to do and I can look at it.

Thanks for your feedback. I don't know why we use `toJS` but I think changing to `JSON.parse(JSON.stringify(properyData))` should be fine. 🤷 What performance degradation did you see? Could you provide...

https://github.com/staylor/react-helmet-async