Our education community allows users to use iframes to insert H5P (HTML5) content which works great as an allowed iframe URL.
But one content type that embeds an audio recorder is reporting this error:
All of our discourse content is served as HTTPs, and all urls in the embed are HTTPs.
This is the place where the error is reported in our discourse:
The same embed works as expected in a WordPress site Is This Thing On? – The H5P PB Kitchen
I realize this may be an issue with the way the source content tests the connection, but am trying to isolate what is different when iframe embedded in discourse.