I noticed that the new forums are using HTTP rather than HTTPS for some of its connections.
Some cases might be inevitable (such as maybe when users embed from websites that do not support HTTPS?). But I just checked and it seems most of the HTTP connections are made to http://schema.org and http://data-vocabulary.org, both of which seem to support HTTPS.
Are these loaded by WaniKani? Or are those URLs inherited from Discourse? If possible, maybe they’re worth upgrading to a secure connection?