Fixed via
https://github.com/discourse/discourse/commit/a341dba5d909bb07d75a1620fa190e9b6ed0f77b
and
https://github.com/discourse/discourse/commit/bb2c48b0657f6182b852ab76fc190825df5d2b7f
Example:
https://aboutpodcasting.simplecast.com/episodes/recording-your-first-three-episodes
… oneboxes as:
Thanks for reporting this issue @Grayden_Shand 