I suggest taking a look at your html sanitization settings make sure html isn't allowed in markdown settings.
Next step would be to move the other 2 topics from that category and check if you still see broken markup.
How block connect to 127.0.0.1:4567 from web
Need access only from localhost
config.json, add a bind address:
Is there any downside to doing this on systems if they are configured to run behind a local web server?
@rod if the NodeBB service is passed through Nginx or some other type of reverse proxy, then you should not have the NodeBB port exposed. You should bind to