Comments aren't showing on Reader posts for readers who don't belong to the site.
It looks like this is a regression from #12295
To see comments and be able to add comment
Cannot see nor add comments
Safari/Firefox/Chrome OSX

Luckily this was behind a feature flag, so no harm should have been done.
Luckily this was behind a feature flag, so no harm should have been done.
You would have thought so, but this leaked out and affected all reader users, I think because the components are shared.
More feedback on this happening on the new PR here: #12551