useRemirror:onChange callback isn't called in StrictMode

[ronnyroeller]

Description

I'm setting up a remirror editor with the onChange callback to capture the active state of the commands as explained in the Usage example:

const { commands, active } = useRemirror(() => {
  setActiveCommands({
    bold: active.bold(),
    italic: active.italic(),
    underline: active.underline()
  });
});

The onChange callback is correctly called if the editor element isn't placed within <React.StrictMode>. Yet, running it in StrictMode stops the callback from being called.

Reproduction case in CodeSandbox:
https://codesandbox.io/s/determined-breeze-ewjky?fontsize=14&hidenavigation=1&theme=dark

Possible workaround

Remove React.StrictMode

Checklist

• I have read the contributing document.

[ifiokjr]

Forgot to say, thanks for opening this issue. I appreciate the effort that goes into it and it makes the codebase so much better.