Context "themeManager" not found, do you forget to inject it?

[sytolk]

Hi,
I have use Switch Theme like this:
https://github.com/Saul-Mirone/milkdown/blob/824e89682e183f6af2179fb09de43802cb1dffb3/website/pages/theme/using-themes/index.md#switch-theme

but after update milkdown to v6.5.2 this error appears: Context "themeManager" not found, do you forget to inject it?

[Saul-Mirone]

I can't reproduce the case, maybe reinstall dependencies can help?
https://codesandbox.io/s/clever-pare-uvuovz?file=/src/index.ts

[sytolk]

I have done with React and this works.. https://codesandbox.io/s/eager-platform-60tj12?file=/src/App.js
maybe in useEffect theme switch have problem