I'm not sure when this happened but the cards for a Twitter embed no longer work? Now, you only get the title of the tweet. Is this something that may be looked at @julian?SpaceX on Twitter
AFAIK iframely plugin is maintained by an external team...
What you showed is what we were seeing for a long time; so, we excluded twitter from iframely list and are using this plugin for twitter embeds:
I thought the plugin was maintained by NodeBB team?