I've found the cause, the Wordpress SSO plugin was causing issues.
Github issue importer
For our NodeBB installation, I have made a Github issue importer (Github issues → NodeBB). However, I don't have the time to maintain it and it's not perfect code (although all NodeJS and relatively clean, I think).
Is there anyone who wants to take over and maintain it?
drew last edited by
Is there a link to it?
No, it's not publically available because it doesn't meet my quality requirements for publication. I can send it to you if you're interested.