Multiple `<Helmet>` tags will break (only one will render)

[matthew-dean]

Multiple `` tags will break (only one will render)

from react-helmet.

[derzierau]

+1 same for us. In our case our site uses react-helmet and we have a web component running inside of it using also react-helmet. It initially renders the main site helmet tags and deletes them when the web component is rendered.

[matthew-dean]

I think this may be a bug related to this feature:

Nested or latter components will override duplicate changes

In this case, these are not duplicates but are completely unique tags. But they are obliterated by the later <Helmet> call.

[matthew-dean]

Additional context -- I've checked this with React 17 and the issue persists. React 18 didn't seem to have the issue, but we're not ready to upgrade to React 18.