Changing TinyMCE's style_formats causes react-tinymce to rerender and lose focus

[marchbnr]

Whenever the style_formats have been changed in TinyMCE's config, like in this example, the react component of TinyMCE is broken.

Every keypress will cause the component to be rerender and the focus will be lost.

[marchbnr]

For the record: The component is not rendered again, but the html element changes and thereby seems to lose its focus.