Just noticed today that the CSS styling for the callouts in chat are missing, because the .chat-cooked class is missing from here:
:is(.ProseMirror, .d-editor-preview, .cooked, .body-diff)
blockquote.callout[data-callout-type] { ... }
it should be:
:is(.ProseMirror, .d-editor-preview, .cooked, .chat-cooked, .body-diff)
blockquote.callout[data-callout-type]
as chat hasn’t ever had a .cooked class afaik, just .chat-cooked.